The first chief of staff of Kronos in Japan.

Spoiler

Responsibility in the abduction of Guyver unit fell on him after the second unsuccessful attempt to get them back, he was fired by Richard Guyot and turned into a Enzyme, a series of special Zoanoid Guyver killers, their blood is able easily to dissolve his armor. Genzo's life after conversion was only a week since work on it was not completed. Genzo was furious because of his dismissal and the whole fury he unleashed on the Guyver 1. In the fiercest battle he managed to beat Sho and rip out his control metal. Genzo dies when his body explodes on the orders of Guyot, who say he has no use for anymore.