Ian, Marcus, Harold, Set, Gizmo, Fallout 1 Overseer, Tandi, Francis, Charon, Desmond, Ashur, That Enclave soldier you contact in Gecko, Renesco, Decker, Rhombus, Frank Horrigan, Lieutenant, Master, Goris, Vic, Pariah Dog, Bess, John Sullivan, Flick, Dukov, Moira, Tulip, Elliot Tercorien, Sergeant Montgomery, Panada, Reddup.... Yeah I think that's all I can think of at the moment.

Fallout 1 and 2 had more likable characters than fallout 3 did though.

If I had to absolutely pick one then I'd have to write Ian's, Desmond's, Renesco's, Harold's and Tulip's names on pieces of paper then toss 'em in a hat and draw a winner.
Can't choose between them.

1. Liberty Prime
2. Desmond
3. Moira Brown (lol jk)
Real 3. Harold

Dogmeat is amazing, he made Adams Air Force base incredibly easy. And, if anyone damages Dogmeat enough to make him whimper in pain, they are paying, big time, caps or life, whichever one runs out first. He he...
But really, heres my list:
1. Dogmeat
2. Dinky the Dino (Even though hes an inanimate object).
3. Cerberus

I hated Desmond, I don't know why. There's just something about him that makes me wanna shoot. Maybe for thinking I can't do things on par (if not better) than him.

Favorite Heroes:
-Albert Cole: A.K.A. "The Vault Dweller". C'mon, a smooth-talking lawyer that can shoot and looks like Bruce Campbell? Groovy...
-Marcus: A mutant with enough brains to see the Master was full of crap. Plus Michael Dorn just sounds cool anywhere.
-Gorus: He may be a midget by deatchclaw standards, but his intellect and combat skills made up for it.
-James: If he could be one of the smartest people in the Wasteland, have Liam Neeson's voice, and get into a vault, that's gotta be cool.
-Dogmeat: How could he not be psychic like Blood?
-The Lone Wanderer: Wish I were that sweet in real life.
-Killian Darkwater: Han Solo for sheriff!
-Elder Maxson: The closest thing the West Coast BOS had to Elder Lyons, someone with a conscience.
-Harold: He had a good, long run. Liked it when he had Charlie Adler's squeeky voice in FO1 and 2.
-Liberty Prime: "Communism is the biggest defintion of failure!" Just wish he turned into a Kenworth or Peterbuilt, too.

Favorite @ssholes:
-Lieutenant: I just like to hear Tony Jay's voice. MEGABYTE!
-Set: Negaduck in zombie's clothing.
-The Master: The Brain if he came within 99% of success, only to drop the ball on the 1 yard line on the 3rd down.
-Myron: White, teenaged Tony Montana with a knack for chemistry. So glad he got shanked by one of the addicts he created.
-Jericho: The most trustworthy Raider ever. Just don't give him a Fatman...
-Frank Horrigan: WTF wasn't there somebody like him in FO3?
-Alistair Tenpenny: Pompous British [censored] with a genocidal streak.
-Mr. Burke: Someone crazy enough to agree with above...
-Commander Jabsco: For a guy with limited AI and hardly any lines, he sure put together the biggest group of random-jumping d@cks in the Wasteland.
-Dave: Nobody likes a bigamist egomanic.
-Moriarty: I hope Gob p@ssed in his cereal every morning.
-Mr. Crowley: Never let a ghoul have T-51b armor or a Fatman...
-Paladin Bael: It's so worth getting shot in the @ss by killing him.
-dike Richardson: Guess the Enclave's not perfect, they let a politician live...
-Augustus Autumn: He tried so hard to live up to his West Coast daddy's Enclave plans...
-John Henry Eden: Yeah, I so wanted the punk form Clockwork Orange to be president.
-Attis: So he's from Brotherhood of Steel and not really canon, but he was cool for a Master's Army remnant.
-Arthur Asher: Nothing like a feudal lord to rule Pittsburgh.