You could be very evil in DA:O for sure. I remember my evil Amell Mage somewhat, though not sure if it's 100% correct.
Victoria Amell - Human Female (Blood) Mage
Arrogant, Greedy and a False Sense of Superiority. Her way or six feet under!
Loves Blood Magic and abusing it, also loves starting trouble for others.
Off the top of my head....
-Flirted with Cullen. - Very frustrated that he didn't accept Victoria's purity and broke her heart thus making her very bitter.
-Jowan. - Was Victoria's second option but he went for that stupid Chantry girl! So Victoria sold him out, his plan was lame anyway. Though taking the fall for him really ruffled her feathers and made her figure out that everyone should only be out for themselves!
-Hardened Alistair and Leliana. - World is terribad, you should only look out for #1 and kill anyone that tries to get in your way! NO EXCEPTIONS!
Alistair. - Victoria lost her virginity to him but felt nothing over it because the whole time she was thinking about Cullen. So naturally Victoria later sold Alistair out, especially when he caught feelings and refused to visit her tent anymore when she demanded his presence!
Morrigan. - Gave Morrigan the book, because why not?, and killed Flemeth not for Morrigan but because Victoria saw Flemeth as a powerful rival.
-Barkspawn not recruited. - Dogs are smelly.
-Leliana recruited. - Crazy lady means that she must be crazy in bed! This rang true, Victoria wasn't disappointed at all with Leliana's "performance" and Leliana became her favorite night time distraction. When Alistair and Zevran started catching feelings Victoria dumped them to keep her favorite distraction. Course that eventually ended after Leliana had to stand against Victoria at the Urn and thus died. Victoria offers no exceptions, defy her and DIE!
-Sten not recruited and left for dead. - Lost your sword, huh? Pathetic. A quick death is too good for you, let the Darkspawn sort you out!
-Zevran recruited - Interrogation technique required Victoria using minor magic, chains, rope, a Tent (Sometimes), and the such... For Science.
-Romances and/or Sleeps with Alistair, Leliana and Zevran as much as possible. Three-Way with Isabela and Leliana. - What? Being forced into the service of Grey Wardens is stressful!
-Zevran betrayal. - No surprise, Victoria locked a chastity belt on him after he wanted to end all the bedtime fun as punishment which Zevran didn't like. Victoria kept the key, Zevran wasn't even allowed to look at it.
-The Stone Prisoner
--Recruited Shale. - Victoria always wanted a pet Golem!
-Broken Circle
--Blood Mage. - Killed her, she lost after trying to kill Victoria so it was the only option.
--Cullen's Plan. - Agreed with Cullen, even bitter Victoria still has a soft spot for her favorite Templar.
--Wynne Fate. - Killed her for not falling in line with Cullen's idea which he had said with those luscious lips and puppy dog eyes.
--Irving Fate. - Let the demon take him than killed that weak Abomination! Sweet revenge! After all, Irving's plan left Victoria taking all the blame and forced into Grey Warden service as well as allowing the real culprit to escape! No one screws over Victoria!
--Sided with Templars. - Only because Cullen is a Templar, though Victoria hates Greagoir due to what happened in the Mage Origin and would kill him if Cullen was cool with it. Sadly he wasn't so Victoria let that old geezer live... For now.
-Arl of Redcliffe
--Village Under Siege: Let the Village be overtaken. - If they can't help themselves or show proper financial gratitude than Victoria has better things to do!
--Jowan: He did the ritual, killed him afterward. - Running away and leaving Victoria to take the blame thus forced into Grey Warden Service?? He dies!
--Desire Demon: Intimidated. - Victoria's demands were clear, teach her how to be a proper Blood Mage! Desire Demon complied.
--Connor: Knocked out Isolde and killed Connor. - Weak minded child with too much potential for demon's to exploit, thus Victoria killed a potential rival.
-Nature of The Beast
--Sided with Werewolves. - They're smelly but at least they don't pretend that they're Victoria's superior. Quite frankly, those Dalish Elves signed their death warrant the moment they decided not to show proper respect to Victoria's awesome magical prowess!
-Warden's Keep
--Sophia's Fate. - Victoria killed her because her ugly form freaked Victoria out.
--Avernus's Fate. - Spared him as his research was interesting and Victoria wanted no limits placed upon it. Thus Bad/Evil Experiments for POWER!
-Urn of Sacred Ashes.
--Kolgrim's Offer: Accepted, Killed Leliana. Though we all know that doesn't stick.... - How dare she question Victoria! Though Victoria did end up missing, for a time, the "entertainment" that Leliana had provided for her... But than Victoria remembered that the Pearl existed.
--Brother Genitivi. - Allowed him to leave, though he may have committed suicide later after his name was slandered.
-A Paragon of her Kind
--Oghren. - Victoria didn't have much of a choice but to recruit him. However, Victoria later "killed" him when he snapped at her. Victoria don't take that mess!
--Anvil of the Void: Sided with Branka, killed Shale, and Branka lives.. - Because Victoria wanted an Army of Golems! Shale disagreed and for that Shale had to die as Victoria doesn't accept any sign of insubordination!
--King of Orzammar: Sided with Harrowmont. - Harrowmont is a weakling so he Rules because Orzammer and the Deep Roads annoyed the heck out of Victoria so she wants that city of fools to burn! Besides, setting up for future wars means Victoria can show off her awesome magical prowess more often too!
-Return to Ostagar
--Left Cailan's Body for the Darkspawn. - Weak and foolish man, if he had a brain than Loghain wouldn't have succeeded and Victoria wouldn't have been blamed for his death!
-Landsmeet
--Won. - Was there any doubt?
--Ruler: Anora. - A fine, strong, beautiful, and independent woman! She fights to get what she wants while still showing proper respect towards Victoria thus earning Victoria's vote of confidence! Alistair is also kinda immature even if he was great in bed.
--Loghain's Fate: Recruited into the Grey Wardens. - What better revenge than having Loghain obey Victoria's every whim and desire?!
--Alistair's Fate: Executed by Anora. - How DARE he try and ruin Victoria's revenge plot and being so immature! Victoria taught him better! Thus he had to die for getting in the way and for not remembering what Victoria taught him, her lessons are golden!
-The Battle of Denerim.
--Morrigan's Ritual: Not done, she left. - No, Loghain must die and he wont get any nookie before the end!
--Archdemon: Loghain killed the Archdemon and thus died. - After all the trouble Loghain had caused Victoria, good riddance!
-Epilogue
--Boon: Title and Riches. - Victoria now owns land, fortune, and title! Now no one can tell Victoria what to do anymore! Mwahahahahaha~!!!!
-Awakening
--Companions
---Oghren. - Didn't Victoria "kill" him? Awkward....Whatever, he can stay since not even death can stop him apparently thus earning Victoria's respect.
---Nathaniel. - Killed, what use does Victoria have for a Noble Family that lost their gambit for power?
---Anders. - Gave him back to the Templars, Victoria wrote about this to Cullen. Still trying to get that sweet sweet Templar purity even in Awakening. Why wont he give her what she wants?!
---Justice. - Not recruited, waaaaay too freaky looking and he smells REALLY bad. Victoria don't put up with that! Bathe or leave!
---Velanna. - Killed. While Victoria respects Velanna's power she cannot forgive how foolish Velanna acted during her thirst for revenge. That and there can only be one Queen in this group and that's Victoria!
---Sigrun. - Victoria passed on Sigrun considering what happened to Sigrun's companions, most likely due to Sigrun's own incompetence.
Defending the Land: Trade Routes protected. - Can always import more food.
Silverite Ore. - All Silverite belongs to Victoria!!!!
Amaranthine. - Burned it to the ground to slow the Darkspawn Advance.
Vigil's Keep. - Defended the Keep as she ain't standing for the Mother stepping on her yard without a fight!
Depths of Depravity: Accepted the Architect's Offer. - Hey, guy's powerful even if he's REALLY ugly! Besides, having Darkspawn owing her favors is very enticing! Victoria may also get her dream of having Darkspawn and Dwarves riding Golems and Mabari into battle against Darkspawn!
-Witch Hunt
--Morrigan. - Stabbed her, that's what she gets for trying to ruin Victoria's revenge plot and abandoning the party! Morrigan is also a powerful rival and Victoria eliminates ALL of her rivals!
Sadly most of the evil choices are non-canon due to Novels and DA2 outright contradicting or ignoring them.