Gennosuke Yumi

弓弦之助, Professor Yumi, Dr. Yumi
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A former colleague of Koujis grandfather Juzo Professor Yumi is the current head of the Photon Power Research Laboratory. He is the father of Sayaka Yumi and also built her robot Aphrodai A. In Shin Mazinger Shougeki ZHen his name was changed to Yannosuke despite all the previous Mazinger series referring to him at Gennosuke.
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