Donkey Kong

Donkey Kong ("DK" for short) is the grandson (or son) of Mario's original nemesis in the game that bore his name. He's a big hulking ape with a penchant for tossing barrels and eating bananas. He's been pushed out of Mario's #1 spot by Bowser (and gotten his own video game series), but has again challenged the plucky plumber in the Mario vs. Donkey Kong games. According to Donkey Kong Country, the original Arcade Donkey Kong was actually his grandfather (now named "Cranky Kong"), and while this was disputed for a time, later games reconfirmed this.