The Evil Acorn is the main antagonist in Conker's Pocket Tales for the Game Boy Color. Whom appears to be an acorn who has busted Conker's surprise party and has kidnapped Berri and stole all of his presents and invitations.
In Conker's Pocket Tales, it appears that the Evil Acorn has something against Conker, as he hides in a cake at Conker's birthday party, pops out, kidnaps Berri, and steals his presents. Conker then sets out to find his girlfriend, Berri and his presents, as well as the Evil Acorn. After Conker ventured through Willow Woods and Mushroom Town, the Evil Acorn was there waiting for him, and has made Conker fight Hsstamean. After Conker defeated Hsstamean, the Evil Acorn had taken Berri into the Old Barn and into Rapido Ranch. After Conker's adventure in the western themed land, the Evil Acorn had made Conker fight Sol and Luxo, whom Conker ultimately defeated. The Evil Acorn then headed off towards Krow Keep, and after Conker made his way through the castle, the Evil Acorn pitted Conker against Waldorf. After Waldorf's defeat, the Evil Acorn runs to the Mako Islands and the Claw Swamp.
In the end of the game, the Evil Acorn is blown away sky high into space orbit, vowing revenge as Conker and Berri return home to enjoy the night. The Evil Acorn last appears in the end credits.
Conker's Pocket Tales