Sole Appearance: Episode 1 - "Ideon Resurrected"

Rouri was an archaeologist living on Solo. There he worked on the Sixth Civilisation ruins alongside Professor Formosa and his daughter Sheryl, as well as his own son Cosmo. He helped put human-compatible control mechanisms aboard the three trucks they discovered, but was unable to get them to move.

He was killed by falling machinery when the Buff Clan attacked the dig site.