Kai

FIRST SEASON
Main article: 爆転シュート ベイブレード 2000
Kai appears in the end of the very first episode of the show; at the time Kai is the team captain of the Blade Sharks (a group of beybladers that terrorize others who play the game によって defeating them and stealing their blades), as well as the 爆転シュート ベイブレード world champion. Tyson Granger, the main protagonist of 爆転シュート ベイブレード and Kai meet after one of Kai's 'underlings', Carlos, loses to him. Kai defeats Tyson as easily as Tyson did Carlos, though he does not use his bit beast for this victory. Later on, Kai kidnaps Tyson's genius friend Kenny, and is challenged by...