Costume Brawl (2007)

The Costume Brawl is a new addition to Halloween, first unveiled for Halloween 2007. It allows players to join a PvP match looking like a notable person of the Guild Wars storyline of the same profession and gender of the character.

Obtained from
 * Bobby (Costume Brawl) in Lion's Arch, Kamadan or Great Temple of Balthazar

''After you speak with Bobby (Costume Brawl), you will enter the outpost for the Costume Brawl already dressed in your costume, with your skills selected. If you forgot a weapon, one will be spawned at your feet. From there, you will join the combat in one of two brand new arenas or two favorites from the Hero Battle series. Each brawl is free of Death Penalty, and each round will last ten minutes. At the end of a match, every player on the winning team will receive a prize.''

Prize

 * Trick-or-Treat Bag
 * 7 Gamer Points