Ok so here is my list.
Likes:
1. Tali: When I first saw her in ME 1 she impressed with some Tomb Raider moves, than she turned out to have a nice charakter, and she is really interested in the mission. And unlike other Charakters she was actually thankful for help. In ME2 when I saw her... I realized how happy I was (didnt read any Spoilers who is in^^), and when she run away and TIM told me its not secure to have her with me I was soo pissed. All in all, for me she turned out to be the best charakter, I love her hard sides, and her soft sides, and sometimes she is a bit crazy ^^...perfect for me.
2. Joker: With Joker by my side I am sure I can rescue the galaxy from anything. He doesnt need help with everything...like other crewmates... jeah I am looking at you crybabys. He has the same sense of humor as myself, always has something to say, rescued my life like 100 times, oh and he likes Tali. I can always trust in Joker, my bro.
3. Mordin Solus: Come on he is great, and he even can sing! Also he has really some depths, but he can be cold and logical, with Tali and Joker around we need someone like that, also he is very helpful, and always knows how to talk about some interesting facts.
4. Liara: we had a rough ride, I first liked her in ME1, but she turned out to be a bit much of a crybaby, than I was happy to see that changed in ME2, and ...she lets me down for some dumb research ! With the Shadowbroker DLC it changed again, I understand her reasons and felt a bit bad for being rude to her. She makes a great friend, and understands that I am with Tali now. I am looking forward for rescuing the galaxy with her as she new Shadowbroker on my side.
5. The Krogan which does the Lyrics for his Asari girl at Illium: Way to go man, you jumpend over your Krogan Shadow for what is important in your life, maybe not the best idea to make a home on Tutschanka, but in the Clan of Wrex its maybe ok, hope you are ready to fight the damn Reapers in his Army at ME3. We will watch over your Children if you fall.
I could mention a top 10 but.... jeah you asked for 5. Same goes for dislike, in fact I would like to have a top 20 in dislike -.-
Dislike:
1. Tim: If you want me to rescue the galaxy because your little supergirl isnt able to do it alone...than stop f...ing around with my plans all the time. Stop telling me who should be in my crew racist, also part of your doing is horrible! I remember one Admiral I really liked and... I dont believe you had no idea about Jack, and the Overlord stuff... I will kick your.... after I finished this reaper stuff !
2. Udina: First time he talked to me I already know this little politican will screw me over countless times when I try to rescue the galacy, not because he is evil (I am looking at you Tim) just because he is a idiot. I was really happy to see how he is Andersons little dog when I gave him a spot in the council.
3. Samara: Again ... you cant rescue the galaxy with a .... up your..... She is a grown, really old asari, and all the time I have to tell her, what needs to be done. Than she has this weird codex, which stands in the way all the time. Girl you should realise... we try to rescue the galaxy here. Thats the big goal, sometimes not everything wents the way we like it. Than she states she will kill me after the Mission is over ? Girl when the mission is over I still have to defeat the biggest evil the people of the galaxy have ever seen, and you basicly tell me you are a traitor ? Ok so I just had to help Morinth and kill you off before you can kill me. At least Morinth will do her Job.
4. The Asari Girl in Sarens Clone Base in ME1: I let you run from the little Bomb i am going to drop, and what does she do after telling me it was not her idea. She goes out, teams up with some mercenary and a crazy krogan Warlord, to do what ? jeah clone some more Krogans ! Thats what you get for being nice... more traitors. I let her run again... but this time I am sure it was a mistake.
5. Ok I cant decide who I hate most here... some people are really in for a close race here.
5.1 Miranda: You spy on my crew... you report to Tim, you are atraitor girl, your loyality is on the wrong side and than you are asking me for help with your family stuff after all that. Ah you have so much to learn about this runs on my ship!
5.2 Turian Council Member: It is ok you didnt trust me first, but damn I rescued you when the Citadel was attacked, why the hell you still ahte on me in ME 2. That is even more harsh because I was always a good specter always loyal with the Council, never with the Alliance or Cerberus, they just where used for the good of the galaxy and the Council by me.
5.3 Specter in Shadowbroker DLC: Another Specter working with the reapers.... ok basicly with the reapers over the Broker, a way stronger one than Saren btw ^^ when it comes to fighting. You damn traitor, I am a specter, I fight for the council and for the people out there, and damn it was good to kill you off...
^^ Everything out of the view of my charakter btw ^^