Kraken is the leader of a pirate team known as The Kraken Team. He holds the Power Stone of Water, and changes into the Ghost Pirate. He ends up losing it to Ayame after a few fights.

An ancient legend tells of a magical Powerstone that granted its owner any wish desired. Adventurers from all over the globe clash as they seek this mystical gem. <br><br>
Based upon the Dreamcast game, POWERSTONE tries to entertain us with the story behind the game's premise. The plot begins with our hero, Fokker, training to be a fighter like his idol, Vargas. <br><br>
(Source: AniDB)