Proffessor Sinichiro Yamamura was one of the few people who knew that if a Zoalord were
to merge with a dormant Guyver unit, they would become the most powerful being ever. the professor also knew about Guyot's
knowledge of the Guyver/Zoalord subject and about Guyot's plan for using this to destroy Chronos and rule supreme.
When Yamamura still worked for Chronos he was the one who created the four prototypes for
Guyot's Zoaform and commanded them in their revolt. The target was Guyot who was still being proccessed into a Zoalord but
due to the presence of the other eleven Zoalords at that base they lost. The professor helped Murikami, the least injured
Proto-Zoalord escape and in the end, was killed along with the three other Proto type Zoalords...or so we thought.
Currently Yamamura is helping Agito create armies of Libertis Zoanoids in their war on Chronos.