Legendz(2003)

Legendz

Scientists have discovered that mystical creatures like dragons, mermaids, and werewolves DID exist. This discovery has become a popular toy craze that is sweeping Japan: Legendz. This game is considered to be the ultimate role playing game were kids can train their Legendz to participate in dangerous matches. Ken Kazaki and his Legendz Windragon are ready for anything and Ken wishes to obtain the Golden Soul Figure by any means necessary.

(Source: Anime News Network)