He never appeared in any video games made by SEGA.
Sanshiro was a Judo master that tracked down and beat up people who were not playing the Sega Saturn. He also trained in odd ways.
Segata's end came in the form of a missile directed at the Tokyo, Japan headquarters of SEGA. Sanshiro jumped onto the missile and deflected it into the atmosphere, he was killed in the following explosion in the advertisement.
The character became very well known in Japan, and partly made the Saturn successful.
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