Hayato

Assigned to be Yumi's pilot, he develops a crush on her quickly but lacks the courage to tell her how he feels. David picks up on his infatuation quickly and torments him endlessly, and Yumi is far too preoccupied with the "White Tekkaman" to give him any notice. He's prone to bouts of passionate anger when his "love" is threatened, but his loyalty is absolute.

[From Wikipedia]