Kyousuke Jin or Gear Master Jin is a member of the Tobita Club. He is a skilled Gear Master and was once a member of Team Griffon along with Kuroudo Marume, but a dispute between them caused him to quit the team. He is the third Gear Fighter to be recruited into the Tobita Club. Kyousuke's Crush Gear is Dino Spartan, and later on in the series, Dino Phalanx.