HK-47 is an assassin droid from the Xbox/PC hit RPG Star Wars: Knights of the Old Republic. He's strongly considered to be the best character in the KOTOR series by many fans who have heard his catchphrases and have used him in battle.
HK-47 managed to make the Summer 2004 Contest, but was quickly defeated by Sora. HK returned to the Summer 2007 Contest and (along with Zero) defeated Lloyd Irving and Jak. In the second round, HK-47 bowed out, finishing last in a match against Crono, Zero, and Raiden.