Drunk, Violent – This person gets drunk then belligerent. And, nothing can ruin a party more quickly than a fight.
What else you might try – Though two of these can be a source of entertainment during your event, provided their belligerence is directed toward each other, it’s best to get these people to leave. If that does not work, with another trustworthy guest or two explain that violence will not be tolerated, and possibly escort this person from the party. If all else fails you might want to call the police. You don’t want them to drive, so arrange for someone to take them away, if not the police.