Following Geese's death after falling from his tower, Terry took a young Rock under his wing as the boy's guardian. Rock took moves from both of his fathers, learning moves from Terry and inheriting some of Geese's trademark techniques. He has business with Kain R. Heinlein, the new big boss of South Town's underworld and the man who not only claims to be Rock's uncle, but also that the late Marie Heinlein - Rock's mother and Kain's sister - is alive. In FF:CotW, Rock finally reunites with his mother Marie and chooses to travel and find his own path, just like Terry.
In FF:CotW, an alternate unplayable boss version of Rock known as Fallen Rock is manifested by the influence of the Jin scrolls, a ruthless dark reflection and personification of his "evil blood" who believes the original Rock to be a failure. Once defeated, the Jin scrolls release their hold on Rock, and he returns to normal.
Fans often pair him with Type-Moon's Arima Miyako in M.U.G.E.N and other fan works since they are both adoptees of their respective families (Rock being the Bogards, Miyako being the Tohno).
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