 This article belongs to the Reboot Continuity
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Karl is a green lantern fish-like monster that disguises himself into a human that first appeared in Scared Silly. He is the twin brother of Carl, who similarly disguises as a human.
Appearance
Karl is a grown man with long grey hair, a closed eye that doesn't open, wears a brown suit and tie, and carries a three candleholder.
His true form has the appearance of a humanoid lantern fish. He is primarily a swampy green with blue dots scattered across his body, and like his human form, he also closes one of his eyes.
Personality
He seems friendly, if a bit creepy at first, but proves to be a malicious sadist later, cracking dark jokes about the situation of his enemies.
History
After dabbing in dark magic, Karl ended up turning into a monster and Carl into a ghost. Afterwards, it is implied that he started eating those who visited his hotel, to the point his brother tried to scare off those who tried to visit the hotel.
However, this ended during the events of Scared Silly. When Ben, Gwen, and Max ignored Carl's warnings, he invited them inside. After the trio trapped Carl, he revealed himself and tried to eat them. However, with the help of Carl, they managed to defeat him and he ended up, alongside his brother, getting sucked into a portal, presumably to the afterlife.
Karl briefly appeared in The Hex Factor, where Hex summoned him in his monstrous form from a portal.
Powers and Abilities
Karl has some form of shapeshifting, changing between a human disguise and his true monstrous form. He also has the ability to use telekinesis and fire energy bolts from his lure.
Karl, in his monster form, has enough strength to toss Wildvine with great ease.
Weaknesses
If his orb is destroyed, Karl will be defeated and get taken to, presumably, the afterlife.
Appearances
Ben 10
Season 1
- Scared Silly (first appearance)
Season 4
- The Hex Factor (cameo)
| Non-Human Villains | ||
|---|---|---|
| Alphas | Boxer • Madcow • Napoleon • Wolfen Sheep | |
| Bounty Hunters | Kraab • SixSix • Tetrax Shard | |
| Tri-Chef-Ta | Molecular Chef • Samurai Chef • Skewer Chef | |
| Earth Creatures | Gil • Ground Hawg Gang • Jackalope • King Koil • Yawk | |
| Null Void Prisoners | Ectonurite Prisoner • Loboan Prisoner • Opticoid Prisoner • Piscciss Volann Prisoner • Vulpimancer Prisoner | |
| Other Aliens | High Override • Vilgax • VNM-3 Specimen | |
| Other | Fogg • Karl • Ninjavitus | |
| Alternate Dimensions/Timelines | ||
| Ben X's Dimension | Vilgax | |
| Non-Canon | ||
| Games | Li'l-Gax | |
| Comics | Beast of Manchester | |
| Other Media | ||
| OK K.O.! Let's Be Heroes | Strike | |