Carl with a C

Carl with a C was a character who appeared in the Ben 10 animated series episode Scared Silly.

Description
A skinny old man with long grey hair, Carl with a C was actually a ghost, and was therefore able to change his appearance to anything that he wished.

History
The owner of a ramshackle old hotel with his brother Karl with a K, after his brother botched an experiment into dark magic, the resultant backlash transformed Karl into a terrifying, flesh-hungry fish-demon, and killed Carl, resurrecting him as a shapeshifting ghost.

Later, when Team Tennyson arrived at the hotel looking for a place to stay for the night, Ben was apparently terrorised by a violent ghost which he finally managed to fight off and unmask as Carl. Carl then revealed to the three that he had only been trying to scare them off so that they wouldn't become a meal for his hungry brother.

At that moment, Karl with a K appeared, and attempted to devour the trio. Luckily, Ben was able to fight him off in his Wildvine guise and destroy his source of magical power. This act freed the brothers from their torment, and allowed them to finally rest in peace.