surfer and beta ray bill gets my vote.

That's a big list... Do you mean in all fiction, comicdom or just marvel?

The Punisher

just marvel...

Hmm... it's between Deadpool, Iceman, Angel & Fantomex

Personally my favorite is either Thor or Captain America. I really like Thor for his attitude and power and his hammer is awesome. Captain America i really like for his ideals, most of the time he has a sense of what needs to be done even it it goes against the rules or opinons of his other teammates. I think Cap slightly edges out Thor for me though

hmmm can't decide.

Winter Soldier.

Yes, he was an Avenger as Captain America, but as Winter Soldier he's never been an Avenger soooo...loophole! :P

X-23

Does Daredevil count as a non-Avenger? He's not on an active roster and was an Avenger for like for 10 issues. Otherwise I go with Magneto.

Cyclops.

Hellion

ITS FOR FAVOURITE NON-AVENGER

That's what I was going to say as well.

Sue and Reed were Avengers for only a couple issues a long time ago (not counting Sue in the future Avengers) but they would be close after Bucky.

Polaris

I like Villians better but don't think that is what your asking for.

Deadpool

Magneto

Ben Reilly, Daredevil and Clea

Kitty. She's my favorite character in any case.

There's more non-Avengers I like than Avengers.

I say Silver Surfer.