We used to have a pre-op, pre-hormone mtf in our group that the GM let play an elven princess. The player also happened to be one of three housemates of the GM, so dumping them wasn't so much an option. Visibly, always wore pink pajamas around the house, with long'ish wavy hair in kind of a Jew-fro. Altogether looked like a human trying to be a Muppet in both looks and mannerisms. She was loud-mouthed, spoke over and interrupted everybody, and complained the GM didn't like her whenever the limelight left her character for more than five minutes at a time. Used to drag their feet about playing games but we're taking over the living room and keeping her from playing Mass Effect so oh well, but by the end of the gaming session was always singing the praises of the game talking about what a great time she had. Next week, lather rinse repeat.
Irritating as shit as a player, and what was worse was that another useless monk player (who was either zoned out, alienating benefactors or trying to befriend random mook enemies, or leaving the game table to make out with his girlfriend - the GM's other housemate) enabled her every step of the way.
Luckily, when the useless monk stopped playing because his girlfriend moved out of the GM's place and no longer cared about coming, the trans self-styled "Bitch princess" quickly started picking up on the fact that we didn't appreciate her bullshit, but when she did something right we complemented her on it. She was on the right track to starting to becoming a semi-tolerable player, but it was around that time the GM got burnt out and stopped GM'ing.