Megaloman looks like a cross between Ultraman and Godman. He wears a full red suit that has silver areas around his pectorals, abs, and lower body. On his legs, his red suit fades into silver and ends at his silver boots. There are also silver markings on his lower arms. His skin is the same silver color as on his suit, with red stripes going down his face. His eyes have no pupils or irises and are just completely yellow. Finally, at the top of his head he has long bleach-blonde hair that flows down his back.
The first Megaloman was the king of the planet Rosetta, Gou Shishido, and defended it until one tragic day. The Black Star Army invaded Rosetta and the king's wife Rosemary and their son Takeshi fled to Earth. The Black Star Army sent a strong monster named Kamagidon to attack Earth, and Takeshi was the earth's only hope. Rosemary gave Takeshi his father's bracelets which allow him to transform into Megaloman. Takeshi defeated Kamakidon and from that day forth was known as the new Megaloman.
Takeshi trained martial arts with his mother and he incorporates it into his monster fighting. His bracelets also allow him to fly and transform into Megaloman. The bracelets are also monster detectors by registering the energy used by the Black Star Army. While as Megaloman, Takeshi has a finisher move called Megalo Fire which allows him to shoot fire from his long hair. He also makes use of a giant martial arts weapon known as Megalo Blade.
- Megaloman is Toho's tallest Tokusatsu hero, dwarfing Greenman and being more than twice as tall as Zone Fighter.