Which are the characters that when they show up it makes you want to just skip the pages that they are in? Who do you hate enough so that his inclusion on a team hs led you to drop a book? I'll start:
1)Beast. One of the most pretentious a-hats ever. I barely manged to read through his parts in Uncanny X-Men 24. I mean, dude, you're part of a group that just killed a whole planet, and you hold a grudge against Scott? Get out of here. First you disagree with Scott's "militant" leadership and creation of X-Force so you leave the X-Men, and then you enter Rogers's militant, secret group. Plus, him giving Cap Britain crap during AvX sealed the deal for me. I just can't stand this character anymore.
2)Storm. I don't despise her as much but she is as big a hypocrite as him:
"Scott, how could you create X-Force? You're a despicable human being!"
"Oh Wolverine, it's okay that you were part of X-Force. Let's get it on"
Besides, her treatment of Scott (and his X-Men) is pretty darn disgusting.
I guess that's it for me. What are your least favorited characters that you'd want them to face a certain and agonizing death, and never come back?