When the powerful demon Termagaira was split in hald, each part gained a seperated body and identity. Megaira became a female demon and lover to her male counterpart Termagent. She was a bloodthirsty warrior who used bladed weapons in combat. She also had superhuman strength, able to lift at least 10 tons. Her gauntlents contained devices producing electricity, allowing her to blast her opponents with it. She was eventually merged back to Termagaira.
