Omnitraxus Prime

Omnitraxus Prime is a character who appears in the Disney XD animated series, Star vs. the Forces of Evil. He is the master of space-time and one of the members of the Magic High Commission.

Personality and Traits
Despite his imposing stature and appearance, Omnitraxus Prime is friendly and somewhat goofy toward those in need of his help. He is willing to assist people with space-time-related problems, though he can be serious if the situation requires it.

Physical Appearance
Omnitraxus Prime is a giant humanoid-like being with a skull-shaped face, a body made up of space. As the largest member of the Magic High Commission, his great size likely prevents him from entering public places, so he usually appears alongside his allies via a crystal ball.

Trivia

 * Omnitraxus's name is similar to that of Optimus Prime, the leader of the Autobots in the Transformers franchise.
 * According to Star and Marco's Guide to Mastering Every Dimension, Omnitraxus was created by Glossaryck to maintain the multiverse for Mewmans and explain to them the delicate strands of space-time.