You all know who I'm talking about. This is that person in the lobby that through force of will alone, starts getting the party or party leader to do or vote things you would rather not do. They make parties feel awkward, and often cause parties to break up for odd reasons after one or two games (even solid wins).
I will now describe various types of party bullies:
The Party Bomb - asks for an invite, then proceeds to invite multiple people to the lobby
The Betrayer - asks for an invite, then leaves as soon as another party opens up
The Vanisher - asks for an invite, and then goes AFK every time you invite them
The Rogue - joins a lobby and starts voting for awful gametypes or awful playlists
The Destroyer - this person joins, others leave
The Elitist - joins and then bails on a weak party to search alone
The Thief - joins a party, doesn't like the playlist, then leaves and steals players from that party
The Whore - joins a lobby and then starts demanding certain weapons or vehicles
The Screamer - joins a formerly peaceful lobby and starts talking at the top of their lungs about everything
The Trashtalker - joins a lobby and then starts making fun of other players in the party
The Emo - joins a lobby, and rage quits after the first loss
The Officer - joins a lobby and starts telling everyone else how to play (aka "the Sarge")
The Griever - joins saying s/he has one more and makes you wait 5 minutes for no one
We all know these people, or have been these people. I, myself, am guilty of being the Officer, Emo, and Elitist. Let's try not to be these people. Also, let's not let these people break up parties. Call them out on their BS.