My main character, Vespian, is one of the anti-social/bully types though he isn't the kind to snap and bluntly say, "Leave me alone". He's the type who enjoys getting into a fight with anyone who so looks as him wrong, bestowing an uncontrollable temper disorder. However, usually when roleplaying him and interacting with other individuals IC-wise, I often get concerned OOC-wise that one or more individuals I'm roleplaying with will become offended and hate me instead of my character. Like Kiki has stated, I too dislike roleplaying characters who bestow your everyday, kind and generous, personality. I like to give my characters a bit of a burden, whether it be an abused past or some kind of mental illness. Usually I do not mind roleplaying with other individuals who bestow an arrogant, rude, or malevolent character as, again like Kiki has stated, it adds interest in the roleplay. Without those bad, evil characters, roleplay can be quite boring. However why individuals get butthurt OOCly just because of how a particular character acts, no matter who they may be, is nothing but childish and shows immaturity. If anything, they're not worth roleplaying with if they're going to act like a sour sport. Feralheart is just a game after all.
This. This right here. People need to realize that the world isn't all daisys and butterflies and a lot of the time, RP and its characters of other people will reflect that, even if other people prefer not to do that. I have a good number of characters who have their own set of pet peeves, are outright antisocial, aggressive, or otherwise not your typical "Hi how'ya doin'? 8'D" kind of characters. Those personalities and behaviors exist in real life also.
But I think the problem with the aggressive/anti-social characters/etc is a simple matter...
These kids are trying to RP something they can't pull off/pull off poorly. And there's always somebody who just /can't/ RP a certain type of character "correctly." Now before anyone starts bashing me by saying there's no correct way to RP, I get it, save your breath. All I'm saying is, these people don't know how to RP them WITHOUT crossing lines and otherwise annoying the daylights out of the rest of us.
Evil characters (which are somewhat clumped into this "type" although not necessarily) I have found are RP'd very poorly by most players in Feral-Heart. Why? They're overpowered, walk away frequently, attack for no reason, have absolutely no motive, etc. There are so few people who can pull malevolent and/or aggressive and/or antisocial characters off.
The only reasons I can come up that people do this is that they are making a genuine effort to fit the personality but... they're trying too hard and ending up with a poor result. Their character may seem "mysterious" and "tough" to them but for the rest of us.... they just end up looking irritating, over-emotional, and pathetic.
And on top of that, I don't think these players stop to think about what they are presenting to the other player/what little they are giving the other person they are RPing with to work from, and its never much. I'm sorry but, if my character isn't the type to pursue after being yelled at, well, I'm not going to make them behave outside their personality to go chase after yours. Your character is /not/ that interesting to everyone else ._. You know? ((I'm not directing this at anyone, just speaking in 2nd person here.))
When I use some of my less social characters, I come up with a reason that they HAVE to stay in that area, so they're essentially forced to interact with the other party of whom they otherwise wouldn't deal with. It could be as simple as saying they are waiting on someone, waiting for something to happen, or just camping out in that little area. It doesn't make them any more "social" but it makes them stay put and we can safely assume that while its unspoken, the majority of my character's life spent avoiding people. You don't ALWAYS have to demonstrate a character's desire to avoid people by walking away. It could just be an unwillfulness to converse OR even just thoughts such as "I wish so and so would get here already. Does this kid ever shut up?" in the middle of the context of the RP. That's enough to get the point across that your character would rather not be there WITHOUT walking away.
People need to learn what they're good at, learn from other people, acknowledge what they're bad at, realize their character will probably never be as interesting to everyone else as they are to themselves (as harsh as that may sound) and strive to be better. Otherwise, we'll just continue in an endless loop of overpowered, "Evil" aggressive antisocial mary sues that always walk away.