The Great Saiyaman convinces Bulma to create a disguise for him and she creates a watch, which he uses to transform into a superhero alter ego he dubs Great Saiyaman. He begins assisting Mr. Satan's daughter Videl in fighting various criminals. Videl creates her own alter ego called Great Saiyawoman and the two begin fighting crime in Satan City as a team. The Great Saiyaman would continue fighting crime occasionally as Great Saiyaman. https://dragonball.fandom.com/wiki/Saiya_Squad