|Powers and Abilities|
|Abilities|| Enhanced Durability|
|Voice Actor|| Yuri Lowenthal (Outbreak)|
Dee Bradley Baker
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.
The Worst can resist extreme heat.
The Worst can also survive acid.
Although he is indestructible, he still feels pain.
- The Worst made his debut in Outbreak, when Blukic and Driba unlocked him while trying 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 caused Maltruant, Dr. Psychobos, Exo-Skull, Subdora, Toolboxx and himself to be transported to Mad Ben's timeline.
- 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)
Naming and Translations
|Chinese||糟糕先生||From 糟糕 (Zāo Gāo), worst, and 先生 (Xiān Shēng), mister|
|French||Le pire||From le pire, the worst|
|German||Der Schlimmste||From der schlimmste, the worst|
|Greek||Ο Χειτόρερος||From ο χειρότερος, the worst|
|Hungarian||A Legrosszabb||From a legrosszabb, the worst|
|Italian||Il Peggiore||From il peggiore, the worst|
|Polish||Najgorszy||From najgorszy, worst|
|Portuguese (Br)||O Pior||From o pior, the worst|
|Spanish (HA)||Peor||From peor, worst|
|Spanish (Spain)||El Peor||From el peor, the worst|
|Turkish||En Kötüsü||From en kötüsü, the worst|
- 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.