Sukapoon was created by Dr. Little Emon and Dr. Ivan Walnuts before he went insane. He was ultimately a failed eperiment that was supposed to be the ultimate fighting robot but ended up wanting to make people laugh.
One day Dr. Ivan Walnuts turns evil and steals seven robots to take over the world. Emon remodels Sukapon into a fighting robot to take on the robots. He fights them and turns them back to good, but Ivan creates more robots.
Eventually he defeats all the bad robots and boss robots, to finally take on Ivan and his ultimate creation Houou. After a long and hefty fight, Houou is destroyed and Sukapon is remodeled back into a comedian robot.
Super Smash Bros.
In Super Smash Bros. Brawl, Sukapoon appears as an sticker who increases the launch power. In Super Smash Bros. Ultimate, Sukapoon appears as an assist trophy and a legendary-ranked primary grab-type spirit who increases the throw power. His spirit battle is a starmina battle against a Mii Gunner with increased power on the coliseum, Sukapoon can be summoned as a hostile Assist Trophy.