★ 5.8 Film
Great Mazinger vs. Getter Robo
1975
Same creator (Masayuki Akehi); both explore mecha and super robot
★ 7.0 Film
Great Mazinger vs. Getter Robo G: The Great Space Encounter
1975
Same creator (Masayuki Akehi); both explore mecha and super robot
★ 5.6 Film
Mazinger Z vs. Devilman
1973
Both explore mecha and super robot; both action and adventure
★ 5.8 Film
UFO Robot Grendizer vs. Great Mazinger
1976
Both explore mecha and super robot; both action and adventure
★ 7.3 Film
Mazinger Z vs The Great Dark General
1974
Both explore mecha and super robot; both action and adventure
★ 6.2 Film
Godzilla vs. Megalon
1973
Both explore giant monster and giant robot; both action and adventure