The titular main character of the show. Takaya is the 2nd son of the Aiba family and was to become a Tekkaman, until his father saved him and had him launched to Earth, in turn becoming Tekkaman Blade, a being hell bent on Radam's destruction. He joined the Space Knights to defeat the Radam (getting the nickname D-Boy), succeeds, but there's a lot of sacrifices that he had to made. Eventually, however, he becomes more stable and assists his girlfriend Aki in training new generation of good Tekkamen.
Badass Adorable: Overlaps with Badass Normal; she might be The Chick, but early on the series she is said to be the physically strongest of the Space Knights, with the exception of D-Boy, so much that she's confident enough to challenge D-Boy to spar with her after throwing a guy larger than her.
Fantastic Racism: To extremes at time, even treating the hero like a bastard traitor to his own race simply for being a Tekkaman even though he obviously is one Colbert's side (i.e.- he wants the Radam dead as much as said General does)
Green-Eyed Monster: He expresses jelaousy over Blade's relationship with Aki, and in their younger days he is shown to have been unhappy with the attention his more outgoing, popular brother received, as seen in the school race scene.