Zillion
Zillion is an action-adventure video game developed by Sega R&D2 for the Sega Master System and Sega Mark III consoles. The game was designed in conjunction with the Tatsunoko Production’s Red Photon Zillion anime series which released in Japan in 1987. Sega incorporated their first mascot, Opa-opa into the game. Opa-opa pre-dates Sonic the Hedgehog as Sega’s mascot and starred in the Fantasy Zone games.