A few thoughts:

1. Most people aren't two dimensional. Even if someone HaTeS oRcS, that doesn't mean that they're going to fly into a frenzy whenever they see one - that ends up being suicidal. People have multiple goals - hatred can be one, but not dying is another, and effectively getting what they want is another too.
2. Keep in mind that PCs are usually reasonably competent and useful allies - even a completely self-centered character would see the value in keeping them around.
3. What someone would do is rarely just one thing. Usually there's a few things they might do. Think about that. Pick something that's plausible that they would do but isn't disruptive.
4. You made the character. You're responsible for them. And characters change.
5. If it's really disruptive, have an out of game talk about it, and figure out how to not be disruptive.
6. If all of that still happens and the character still does what they do, that's fine... but then the party can do what they would do, too. At the minimum, that's probably "no, we're not going to hang with you." The worst case scenario is what I call "social contract abuse" - one player does things that the party wouldn't tolerate, but does, because of the implicit social contract of "we're playing together as a group". That needs to cut both ways - yes, you stick together Because Party, but you also don't be overly disruptive, Because Party. If one side violates that, the other side is free to as well.