Skullomania was once an average salesman called Saburo Nishikoyama. His superiors were not pleased with his results as a salesman. Down on his luck and constantly under pressure for results, he volunteered to dress up and perform like a superhero at a carnival thrown for a top customer in their department store. He had hoped it would be chance to prove his value as a salesman. When he grabbed the attention of all in attendance, something clicked in him. Tired of his job, Skullomania decided to become a vigilante crime-fighter. Not much else is known of his past.
n Street Fighter EX2, like most other Arika characters, his storyline was changed. Instead of being a Japanese businessman, he was a defector from an army of an unknown nation. He and Shadowgeist are implied to be brothers.
Skullomania closely resembles a Japanese superhero called Kamen Rider, which interestingly enough, was based off of another character from the same creator called Skull Man.
Skullomania was officially used in the Arika game Technictix, released in Japan only. Skullomania also made an appearance in the PlayStation game, Fighter Maker, even with some of his special moves intact. His signature move is the Skullo Dream, an unblockable combo attack which is increasingly comedic in execution as the series progresses.