So one of the rather unusual things about DA2 is that it basically exists in the same environment throughout the game. That was a source of complaints, especially for the dungeons, but it has the advantage of a relatively stationary civilian populace... some of which Shepherd I mean the Warden I mean Hawke would certainly have reason to know, from the time in the slums to the rise in power.
So, my thought one two companion-ish NPCs was to take a more (socioeconomic) 'I'm not a badass' perspective to the context of the setting- basically, the lay man perspectives. And not the 'I'm a totally normal person who can fight with badasses' layman either.
There are two in my mind- the Well-intentioned Noble, and the jaded Gutter Tom Cat. Both take their own class perspective to the Mage/Templar conflict.
Because the civilian NPC's wouldn't have the tag-along exposure the companions do, I'd give them at least two missions to help supplement their arcs. They'd sit out combat, but be a tag along presence for whatever they need you to bodyguard them for. Outside of those missions, they'd have their own 'visiting' encounters.
---
The Well-intentioned Noblewoman is not only the Mage sympathizer, but also a bit of proxy for modern western liberalism... but, admittedly, a bit of a deconstruction in the context of the setting.
Nobless oblige without being royalty, the Noblewoman is a secure, well off woman who wants to help the poor and oppressed. She would be one of the early style philanthropists, a woman glad to help the chantry in organizing charitable efforts, and, as the Discworld put it, 'rich enough to be able to afford living poor and dedicate herself to a cause.'
She is a kind woman, and a good person- she's just also more than a tad sheltered and naive about the world. Very much a believer in the inherent goodness of people if given a chance, the fact that she was never particularly punished or treated harshly and has become a good person has given her a rather schewed view towards anyone else facing misery or oppression, justified or not. She's also painfully easy to take advantage of because, as a noblewoman, she has a lot more to lose without suffering for it.
When she meets Anders, her life changes as she finds a new cause to dedicate herself to... despite really not appreciating the other side's concerns.
In the prologue, her initial appearance would be in organizing charity and helping the Ferelden refugees, giving a little money for food to Hawke and companions. It establishes her good will, but raises the prospect of her being taken advantage of by people who claim to need the money for food but who would spend it on other things. Like bribes.
In Act 1, she would be a recommended money quest for Hawke, serving as a body guard while she organizes Chantry charity into the slums. Here she discovers Hawke or Bethany are mages... and reveals she doesn't mind at all, and expresses support for their efforts to become nobility. Cue gold in pocket.
Also in Act 1, as a reflection of the Qunari, she expresses interest in letting them be in peace and learning about them... but not from outside her own comfort bubble. Very much a 'they can stay in their corner' or 'not in my yard' tolerance.
Finally in Act 1, she would meet Anders and start to gain interest in the mage situation, clearly buying into his tales of abuse and horror and not understanding why it would ever be tolerated.
In Act 2, we see that she's become something of an activist, serving as the much nicer Sister Petrice. She's opposed to both the Qun and the Mages for their anti-family and oppressive aspects, and is trying to mobilize the nobles to pressure the viscount... in effect adding to the political problems, and not resolving them.
On the Qunari front, she is someone who can't see anything good or nice about the Qunari or their ideology, and wants them to leave peacefully. However, especially in the context of seeing some converted Qun followers establishing order and peace in the slums, this comes off as her fearing to leave her comfort zone. She assumes anything she doesn't like is bad for everyone.
On the mage front, she has entered into a cooperation with Anders, and is his other noble patron helping protect him and support him. There's a possible insinuation of one-sided affection, and while Anders appreciates her support and uses her as an argument (even some nobles support us!), there's an explicit undercurrent of difference and 'she's nice and all, but she has no clue about how we are.'
Finally, she and Elthina have a scene in which the Noblewoman pretty much serves as the western liberal-interventionist proxy, urging Elthina to take a stand and condemn the Qunari and the Circle and take a stand as a reformist. In a scene that would win her adoration from the pro-mage fans and Elthina more disrespect she would make a passionate, emotional appeal, only to be turned down... and after she leaves, Elthina confides to Hawke that taking any such stance would throw the city into chaos with no guarantee for success. While the Noble believes words have the power to change things for the better, Elthina recognizes words also have the power to change things for the worse and spark violence, no matter your intentions or desires. (Still, Elthina leaves off, she appreciates the kind-heartedness behind it, and wishes more people and nobles were like her.)
Come Act 3, the comfort zone is going to be reduced. When the Qunari rebelled she lost her parents, who kept her 'give it away' tendencies in check, and her beloved mage cause is now proving not so one-sided black and white and losing her support.
On the nobility side, her rapidly declining fortunes and open disagreement with Meredith are losing her friends and support. In a quest where she tries to rally help from three old friends to help the mages flee Meredith's persecution, she gets a series of gut punches. One is afraid to help, fearing Meredith's retaliation. One is outright opposed to the mages thanks to the rise in blood magic at night, and angrily laments that support her back then helped support these monsters now. But the last one... the last one admits that he only played along with her charity drives to the lesser classes because it looked good. Now that it doesn't look good, and now that she's poor enough to beg for money (he thinks she's trying to con him), he wants nothing to do with her. Ouch.
On the mage side, her relationship with Anders has rapidly devolved as his corruption with Justice continues. The fact that he's using her (possibly even romantically if unromanced?) is emphasized, as well as his single-minded purpose making clear he has no room for anyone else. This is a serious case of Broken Idol for her, and when she is attacked by (implicitly ungrateful) blood mages who want to control her and control what she has left, she's almost at the emotional despair horizon. Even the fact that Anders helps save her, and has a pet the dog moment in expressing gratitude and apology, doesn't really fix it.
Come the finale, she's pretty much at a despair tipping point- her efforts are unappreciated at best and have made things worse at worst, people are assholes, and she's pretty much about to drop out of the nobility and sell her house for something more affordable. Elthina is providing her support, and receiving the charity of others is galling to her. Painful as it is, she admits she was too idealistic and naive about the world and people in it, and immature herself- she wanted to save the world without having to live in it, and now it's not saved and she's here all the same.
Depending on Hawke's efforts and words, she'll either have a new, more mature idealism, deciding to dedicate herself to trying to help the good mages regardless of her diminished means, or she'll cut the ideological baggage and go back to what she can do- help the poor, who are no less deserving of attention for a lack of being oppressed. Regardless, she thanks Hawke for sticking with her, and gives a family heirloom as thanks.
Oh, and for good measure? Regardless of which, she'll be in the chantry when Anders blows it up.
(Unless romanced, in which case she's living in Hawke's house.)
As for a Romance-
Her arc is much the same, but her romance arc takes a perspective of Hawke vindicating her views that the underclasses can rise to be great people as well. Perhaps she'll admit she has a bit of a taste for tough, rugged, and powerful, but once she moves in with Hawke the associated dialogue would talk about how the Champion's lover is using his house (and his name) as a base for organizing her charity efforts.
Friendship-mance would be pro-mage and pro-generosity, with her supporting and encouraging all your good deeds and you urging her to not give up her efforts to do the right thing. Well-meaning power fantasy for both involved, really.
Rival-mance would be pro-Templar as the necessary security, and with Hawke chastising her for being willing to give the shirt off her back. Come the blood mage abduction attempt, she would admit that the Templars do have reason to fear, and Hawke's guidance would keep her from losing all her money. While this cynical tampering of her unlimited good will may seem mean, at the crux a Rival!Hawke is expressing 'I love that you do good... just do it more smartly.'
As for Rivalry in particular- since these are NPCs, the Rival/Friend bonus should be a passive boost for Hawke, rather than a combat bonus. Possibly tied with the heirloom she gives, the 'Generosity' friendship perk could give a tradeoff of an across-the-board stat boost in exchange for a permanent money penalty. 'Thrifty Charity' could give a person boost to, say, stamina/mana recovery.
Tom Cat (not his real name) is basically a poor soul who fits all the points of 'peasant'- he was poor even before he was a refugee who came to Kirkwall, he lives in the glorified sewer slums, he can't even read- he's kind of what Hawke would have been if they weren't amazing legendary combat badasses. Who couldn't read.
That said, there's more to him than meets the eye. He can't read, but he comes a oral tradition (read-bardic level) and is very well informed. He has no money, but he has the personal skills and mind to help him get what he needs. And he can't fight... but he can organize. Oh, can he organize.
He's not just underclass- he's a potential leader of the underclasses. And he can empathize with their concerns, because they are his own.
Whereas Hawke was a refugee from the blight, Tom Cat was a refugee from out of control magic. Riviana might make a good place, if only to give something against BSN's pro-mage favorite 'but nothing bad has ever been said about it!' Tom Cat wouldn't hold much of a grudge against mages in general, but when the equivalent of a socially accepted natural disaster destroys your village... perhaps the safest place from mages would be near where they're locked up.
It ends up not being the most informed choice he ever made, he'll admit, but from the start he makes a case of someone for whom Meredith's strict mage policies are a plus, not a minus, for living in Kirkwall.
Tom Cat is the opposite from Noble Belle's perspective. Noble was pro-mage sympathizer who never had to deal with the consequences of any of the issues she was interested or agitating for. Pretty much all of Tom's perspectives are on subjects he's had personal experience with- poverty, disorder, and being disenfranchised (and taxed) for not being a mage.
Being a concerned citizen of the underclass, sort of, Tom gradually works to organize against such issues, making him a mud-level reformer in his own right... thought not one the pro-mages will appreciate, since 'local victims organizing against rampant mages' comes uncomfortably close to 'witch hunts.' That, with his admitted 'can't read', is supposed to create a shade of contemptible underclass from those who wouldn't accept the positions.
He's a good guy, but where most players come from a Western assumed liberalism position, he comes from a very much towndrodden underclass perspective. His concerns are different, which brings clashes, especially since he's more concerned for the mundane underclass than the mages.
So, prologue- Tom is one of the older refugees we meet, who's turned his skills to helping manage the refugees and keep them orderly into an asset for the guards. He gets to help organize the distribution of food and basic supplies, and has turned that into a tool for influence. The benevolent kind- if you fight and especially if you steal from other refugees, you don't get them. So he's started organizing some informal guards for order, identifying people's skill sets to take care of tasks, etc. He's able to use this to help Hawke in some minor way, and so provides a good first impression.
In Act 1, Tom is treated (at least by Bethany/Carver, Lelliana, and Aveline) as a friendly relation who helped the Hawkes get settled in. Relationship with Hawke might be frosty depending on tone, but it's not unworkable. Tom isn't terribly enthused with the stated goal of (regaining) nobility status, but he understands the mage-aspect of the Hawkes situation and respects their desire to get out of the slums. When he asks why Bethany/Hawke don't simply go to the Tower, where they'd be living as well as the nobles (food, clothes, education, security within the rules, not having to work for an upper class living standard) he'll even express admiration when Bethany (if Hawke) says it's to not leave the sibling and mother behind. (On the other hand, he doesn't really buy into a freedom argument- the poor don't have rights either, people just don't care about them.)
Willing to help the Hawke's, Tom would be a source of a money quest or two, seeking Hawke's help in stopping Carta extortion of slum residents. (If we don't help Tom, after the time skip we hear rumors that Tom invited them to a surrender banquet and had them drugged and murdered- dark shadows.)
Tom, who lives in the sewers, has an encounter with Anders. While Tom tolerates Anders in exchange for the free medical care, he openly dislikes it, fearing that Anders will bring Templar trouble on their heads. While Hawke (or a companion) might give a 'don't look a gift horse in the mouth' advice, Tom believes there's no such thing as free- Anders will want something in return eventually.
Finally, Tom reflects that for the poor, the best people in the city for the poor to try and work with are currently the Templars and the Qunari. The Qunari have never been known to not honor their deals and reliably pay for food. While they largely stay uninvolved, the Templars are notably less corrupt than the city guards (to Aveline's dismay and desire to change), and will investigate suspicious/supernatural crimes that the guards won't be bothered for. Plus, the Templars will guard the Chantry's charity efforts in the slums, making Elthina much more willing to provide it.
In Act 2, with the Qunari crisis looming, Tom is rising as an unofficial leader of the slums in tension and contrast with the established nobility, who suspect and fear/despise him... a fact made only worse by his open ambivalence (even approval) towards the Qunari. He is a minor player in his own right, and his influence in the slums means that everyone who could kill him easily generally doesn't want to.
With the mages, Tom expresses concern about the lyrium smugglers and rise of criminal infiltration- he recognizes that smuggling goes both ways, and that the networks that take lyrium in can take mages out... especially since mages have so much wealth and means to bribe the poor. Faced with the number of people who turn to crime to keep on living, Tom expresses despair at the impossible task. There aren't enough jobs, and those that there are are taxed to support the mages who can use them to bribe the poor- from a class perspective it's a system that favors the mages (who can be comfortable or bribe their way to freedom), and puts the economic and social costs on the poor.
With the Qunari, Tom's class perspective and complete lack of belief in inalienable rights makes him one of the few to outright approve of what the Qunari have to offer- an end to the corruption, the crime, the naked hypocrisy and injustice of class. A society where everyone, from the lowest to the highest, is bound by their laws- that's right, from a peasant's perspective the Qunari are the exemplars of progressive rule of law. Tom recognizes the inherent injustices of it- of losing family and the excessive cruelty towards the mages. That's why he doesn't outright support it, but defends lower class people who convert to it... but everyone knows, or at least expects, that if the Arishok rises up, Tom wouldn't exactly resist. (If asked on his views, the Arishok would probably point to Tom as proof that the people of the city yearn for the Qun's enlightenment even if they can't accept it on their own.) Tom's Qunari-related quest would directly address the matter of rights in Thedas- or rather, their lack of them. When challenged about the Qunari's lack of individual rights, Tom brings up his perspective (and lingering animosity) from the Rivianna witches- when they killed his family, where were his rights then? When he was taxed to support mage luxury and enable the bribes for runaways, where were his rights then? When people were not created equal, when some were given the power to flay people with their minds and others had deal with the imbalance lest the infringe upon the more powerful, where were rights then? Rights don't exist- they are privileges of those with power and money to defend their privileges. **** human rights, he'll stand up for actual human beings with less.
Come the uprising, Tom doesn't take part- he barricades the slums and makes it a no-man's land, preventing the violence from spreading in there and waiting for the ultimate victor. It's not really pro-anyone, and very much 'the losers accept the winners, whoever they may be', but it keeps the poor safer and doesn't obstruct the party.
In Act 3, Tom's star has risen even further. With the Qunari gone, and with them a lot of the now-dead nobility, Tom's anti-mage positions have made him a logical ally for Meredith. Immediately after the coup, Meridith raised Tom to the nobility and as responsible for the welfare of the underground sections of the city, which along with those who criticize his role in the coup has given him the more common title 'The Slum Lord.' With the rise of blood mage cabals prowling the streets at night, preying first and foremost on the poor mundanes, he and Meridith have become close political allies.
On the good side, Tom is showing his class credentials by genuinely trying to help improve their lot. He has opened a (Chantry) school to teach people to read. He takes their concerns to Meredith, who frequently finds them useful tools for removing nobles who oppose her (but who are now removed for being corrupt). He is implied to work with Hawke's mining business, and a number of others, to try and get merchants to hire his slum-dwellers for work. He's been convinced by a mage scholar about the nature of disease, and is spending a good deal of his new money trying to help clean up the underground slums, literally. He's even finally learning how to read and right himself. It's a mesh of good ideas and good efforts to improve the lot of the lowest class. However...
On the mage side, Tom still lives in the slums, and still lives modestly- he just happens to have a great deal of power now, and the wealth he doesn't use to show off himself is used to establish a militia that can generously be called a community watch, and unkindly a secret police. His network of informants is a major source of Templar intelligence for runaway mages in the slums, and his militia is intended to help keep the streets safe at night. What's actually happening, though, isn't calming the situation.
False accusations are rampant, with people seeking to settle grudges, and covert mages are even preemptively accusing those who could endanger them to cover their tracks. The Templar crackdowns are taking increasing numbers of innocents along with the guilty, and there's even word of a secret prison in the underground where non-mage prisoners are being kept until their fate is determined. Tom is very concerned at the suffering of innocents, but it's not clear what can be done. If they stop the informant network for fear of the innocent, the very real blood mage presence in their area will grow. If they continue one, innocents will suffer. It's a greater good argument, but to date he's never had the power to be in that sort of position.
For the militia, the nightly struggle with mages is bloody and deadly. Entire patrols are being wiped out by blood mage packs, and it increasingly seems that the only sizes large enough to win could well be called 'mobs.' Mobs of angry, hurt, and grieving people who are losing friends and family to the mage resistance hiding. Needless to say, when one of these mobs finds a mage, or someone they think is a mage...
The quest culminates in Hawke and Tom staring down an angry mob that s threatening to lynch innocent circle mages who was actually allowed to do some charity work in the slums. In a rare scene of their Templar guards standing between them and the crowd, a rare moment of 'Templars protecting mages as well as mundanes', Hawke and Tom confront the crowd and the uglier side of anti-mage fears of the common people. Tom's efforts to defuse the situation are... not as effective as he'd like, and ultimately it's Champion Hawke who dispels them, either by words (either supporting Tom's words or outright threatening the crowd), blade (fighting a few people), or killing the mages personally (removing the concern).
Regardless, Tom falls into his own depression about the merit and worth of the underclass, and the nature of nobility. Are the underclass (and he) really so depraved and unworthy as to mob an innocent and not care? Is the world order actually just, and should the fate of the many really just be left to the decisions of an enlightened elite who know best? Is the best way to change things for the better to forget about raising the masses, but change for a more enlightened elite?
(And yes, this is basically asking 'does the player know best?' in incredibly paternalistic overtones.)
The player can't really say 'yes, give me all the power!', but Hawke ultimately reaches back into some of those old 'nobles are abusive and corrupt' concerns and can bring back the idea of rights... kind of.
Hawke can urge Tom to continue with what he's been doing- to seek the greatest good for the underclass, knowing he's helping the most people- not because they are noble, or innocent, or pure, but because they are afraid because they weak and they will stay weak and prone to abuse if no one stands up for them. In a moment of insight, Tom realizes that to the mages, they must think of themselves as weak as well- no one person in the mob could match a mage, but a mob certainly could. Tom chuckles ruefully, notes that while he understands the mage perspective a bit better now he still stands for the poor, and goes back to work.
Alternatively, Hawke can suggest that the masses need limits for the same reasons that the nobility or elite should- because they have a power that can be abused against the innocent. The poor have more power than they realize, and they can inadvertently abuse it just as fatally as corrupt elites or mages. Hawke tries to frame it (in a fourth-wall leaning anacohristic) as 'regardless of class, everyone should have the right to do certain things', but regaining his humor Tom reminds him that he doesn't believe in rights. Instead, Tom frames it as 'regardless of class, everyone has things they should not do,' and goes back to work. Thus the Civil Restrictions Movement is born*. Tom leaves intending enforce a higher burden of proof on the spy networks, and change the nature of the patrols, leaving the fighting of cornered mages to the Templars.
*I laughed.
Come the finale, Tom organizes the militia to fight the abomination outbreaks... and, depending on if you finished his quests or not, even protect some innocent mages. If you didn't, Tom's militia outright join in the witch hunt in the name of protecting the slums. If you do, you'd have an encounter of some of Tom's men escorting a frightened mage into a house and then lying to the Templars about there being a mage in there.
Not sure if Tom should die regardless, though, to an Abomination on the streets.
So, friendship/rivalry in a nutshell- friendship is pro-Templar, but also pro-greater good and pro-masses arguments. Pro-poor helps as well, and he's about the one person truly sympathetic with pro-Qunari views- more on the 'they have valid points, and we should allow others to follow them if they want' spectrum than 'they are the best thing ever.'
Rivalry is pro-mage rights, pro-rights in general, and defending the aristocracy and abuses against the poor. Generally super-idealism, plus unconcern. He also tends not to like it if you suggest the poor should accept their lot in life and not do bad things even if crime would help them.
Romance? Probably the biggest point of the romance arc would be the wealth difference- come Act 2 you are nobility, and in Act 3 you are even higher than that. He not only deals with complications of potential hypocrisy for associating so closely with the upper class... he deals with a bit of guilt that you might see him as a gold-grubber trying to be elevated (something he's afraid your mother might think). He's very aware, and a bit uncomfortable, with the class difference. He's noted for never staying around or lounging at the Hawke estate if Hawke isn't there. Come Act 3, one of Tom's first efforts when learning how to write is to write a (horrible scrawl) love poem about how he learned to write to preserve his love forever, but then realized no words would do it justice.
In a friendship-mance, Hawke's pro-commoner, anti-mage threat stances leads him to value Hawke for not forgetting where he/she came from. Hawke is a bit of an inspiration to him, and Hawke's success while staying close to the commoner concerns convinces him that he can do the same.
In the rival-mance, Hawke's more eyes-in-the-sky idealism is charming in its own way. Tom finds it endearing, if not convincing, but Hawke's needling is implied to have an effect. Tom appreciates Hawke's idealism, and in a sincere note wishes that one day everyone can be so secure as to allow it to be real. The pro-mage idealism is something Tom sees as a long, long ways off, compared to the hear-and-now of the mundanes.
And that's it- I kind of like them both.