Takeshi Jinno
タケシ・ジンノ
[spoiler]The Rocket is later revealed to be Team Satomi’s coach Andrei Rublev.
Takeshi was a couple with Fantine Valjean and met with her at times when playing Watch World, however, in season 2, they broke up. Fantine realized that Takeshi and Liz have feelings for each other and thought of Takeshi as a friendly rival rather than a boyfriend. He also matures throughout the series.