|Powers and Abilities|
|Abilities|| Sphere Transformation|
|First Appearance||Welcome to the Mad World|
Fastball is the Yellow's Omnitrix's DNA sample of an Arburian Pelarota from the planet Arburia in Build-a-Ben.
Fastball looks the exact same as Cannonbolt in the Omniverse series, however the eyes are yellow.
The transformation screen looks the same from Omniverse except the background is yellow. The Omnitrix seems to vanish from Yellow's wrist and his arm starts to puff out. Soon, all of Yellow begins to puff and swell into a giant ball with hands and legs. Yellow's hands grow claws and his shoulders and back grow armor. Yellow's chest develops a black line as well as the Omnitrix reappearing. Then, Yellow rolls around in a ball, and reveals himself as Fastball.
Powers and Abilities
Fastball has the same powers as any Arburian Pelarota. He can curl into a sphere and roll around, deflect energy, has enhanced agility, strength, durability, balance and jumping and finally has sharp claws.
Like other Arburian Pelarotas, Fastball subjected to the physical laws of reflection and conservation of momentum, meaning that they can have difficulty stopping or controlling direction at high speeds.
The only history of Fastball so far is that it defeated Yellow's version of Animo in the beginning of the series. Apparently, Fastball was one of the original 10 in Yellow's lock.