Ryuunosuke Kinomiya

In general, he mostly creates comic relief, but he also occasionally (and involuntarily) makes Tyson realise some important tips for beyblading, such as the winder lengthening trick.

For family reasons, Ryu’s dojo also housed the sword-shaped stone inside which Seiryuu was trapped.

In G Revolution, he took the place of the fifth member on Tayson’s G Revolutions team as “Mr.X”. This was only temporary, because Tyson was looking for the appropriate beyblader to complete his team and Kai was nowhere to be seen, yet the Justice 5 tournament rules required for him to submit a list of players before a certain deadline.