Isaac is a character that appeared in Ryu no Michi, it is a robot that was suffering some sort of malfunction until it was repaired by Ryu. Ryu took it into his group and named it after Isaac Asimov.


  • Isaac, or at least a robot with a similar appearance to it appeared in the 2003 Cyborg 009 anime in the twelfth episode "Mystical Island".

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