The Worst

The Worst is the Omnitrix's DNA sample of an Atrocian from an unknown planet.

Appearance
The Worst is a yellow, fat, and somewhat "plump" blob-like alien who wears a pair of green underwear with white stripes on it. He has elephant-like feet with three toes and bear-like hands with three claws. He also has wart-like bumps on his forehead and both arms.

The Worst's Omnitrix symbol is located on his belly button.

Powers and Abilities
The Worst can withstand heavy attacks due to his soft, blob-like body. Although he is indestructible, he still feels pain. In It's a Mad, Mad, Mad Ben World: Part 1, it is shown that The Worst can also survive energy attacks, such as Exo-Skull's laser.

The Worst can resist extreme heat.

The Worst can also survive acid.

Omniverse

 * The Worst made his debut in Outbreak, when Blukic and Driba tried to fix the Omnitrix. The Worst he tried to stop Liam, Fistina, Bubble Helmet and Psyphon along with a group of Plumbers.
 * In No Honor Among Bros, The Worst defeated Malice by taking so much of a beating that the latter became exhausted and lost.
 * In It's a Mad, Mad, Mad Ben World: Part 1, The Worst and Handy Man battled Exo-Skull before to blow up Bellwood.
 * In A New Dawn, The Worst appeared for a short time when Ben was cycling through his aliens.

Ben 10: Omniverse

 * Outbreak (first appearance)
 * No Honor Among Bros
 * It's a Mad, Mad, Mad Ben World: Part 1 (accidental transformation)
 * A New Dawn (cameo)

Trivia

 * According to Derrick J. Wyatt, The Worst comes from the same planet as Ball Weevil.
 * The Worst was accidentally unlocked by Driba and Blukic along with Walkatrout, Pesky Dust, and Mole-Stache.