Jarett is the cruel king of the Pantophage.
Jarrett looks like a red, giant, overweight, devilish alien with an underbite consisting of sharp, white teeth (yellow in Omniverse) and gold (or gold-colored) armor and red, reverse-pupiled eyes. In Alien Force, his armor is plated with purple jewels. In Omniverse, this armor is instead spiked and he now wears a cloak with two small horns and a skull. He also bears a cross-like scar mark on his belly and has a white tuft of hair growing out of his belly-button area.
Jarett first appeared in the episode Con of Rath. He ate the Tiffin as a peace-treaty until Rath jumped down Jarett's throat and took him out, breaking Jarett's teeth in the process. Jarett threatened war against the Lewodans, but Rath threatened to knit his intestines into a sweater, which scared him into making a peace resolution.
Kevin is apparently unaware of Jarett's planet's customs, as he faints from the shock when Jarett eats Tiffin.
Jarett appears in the final scene of The Color of Monkey. He had hired Argit to bring him a Tiffin. When he received the delivery, Jarett was dismayed to find artificial Tiffin in the delivery box instead (courtesy of Ben's interference). He grew angry, and attacked Argit and his Techadons.
In the Ben 10: Ultimate Alien toy line, there is a 2-pack containing Rath and Sixsix. The 2-pack comes with a comic published by DC Comics. The title of the comic is Target Rath, featuring Jarett as one of the main villains along with Sixsix and Kraab. He was revealed to have hired the bounty hunters as part of a scheme to enact his revenge on Ben for his previous defeat. However, Ben managed to defeat his hunters, and as Rath handily subdued Jarett again.
Ben 10: Alien Force
- Con of Rath (first appearance)
Ben 10: Omniverse
- The Color of Monkey (first re-appearance)
Cartoon Network Action Packs
- Target: Rath
- Will Jarrett Have His Revenge?
- Jarett vaguely resembles Kil'jaeden of the Warcraft series. He also bears resemblance to Trigon from Teen Titans.