General Grievous, originally known as Qymaen jai Sheelal, served as the Supreme Commander of the Army of the Confederacy throughout the Clone Wars. Allied with the Separatists, Grievous was known as a fearsome warrior that has killed a countless number of people throughout the galaxy. Originally a freedom fighter on his homeworld, the man who would come to be know as General Grievous quickly became a feared force on the battlefield. As a commander, Grievous lead his people to victory over those who had invaded their home. Grievous' tactical prowess attracted attention from the Sith Lords Palpatine and Dooku, who, with the help of the Intergalactic Banking Clan, arranged for Grievous' shuttle to be shot down so that Sidious could use him as guinea pig in his twisted experiments. The result was the cyborg body that contained his brain and vital organs with versatile mechanized extremities. He's been adoptive by his Mom & Dad. He learn sword fight with Jack and in Adventure Time Crossover he is taught how to create stimpaks from Leonard, who he ends up working with in Adventure Time Crossover.
Grievous trys to bring her back, But he fail. And then he had help with The Powerpuff Girls. So he use artificial sweetener instead of sugar, dirt and twigs instead of spices and they put in what they think is nice such as; Crayons, books, lizards, flowers, computers, footballs, stuffed animals, calculators, a mackerel, more flowers, a compass, boxing gloves, a ribbon, art, bandaids, a smiley face, a globe and a knuckle sandwich (Buttercup punches the mixture). At last he use Chemical X.
He grew up as the cool Hero and team up with Young Autobot & Superman. But, when the future changes, He knows that Gumball died at the hands of an unknowen villain (That Grievous don't know it's name yet.), It up to him and his friends to save both Gumball and the future.