The 12-year-old boy who happens to own the wristwatch that controls the world's most powerful robot! However, this is hardly fun and games. Robo's power is a huge responsibility. Daisaku feels that he should use Robo to help the world, as his father wanted him to, and it pains him to see Robo not work. Daisaku also sometimes feels that he is just a helpless kid and nothing without the robot, and it makes him frustrated. He is also a little naive, being young. He admired the clean energy of the Shizuma drive until he learned of its dark past.