Grey Matter
General Information
Species Galvan
Home World Galvan Prime
Body Humanoid Frog
Powers and Abilities
Abilities Enhanced Intelligence
Enhanced Agility
Enhanced Flexibility
Enhanced Jumping
Wall Crawling
Sharp Teeth
Underwater Breathing
Prehensile Tongue
First Appearance TBA

Grey Matter, sometimes called Rotten Matter is the Omnitrix's DNA sample of a Galvan from the planet Galvan Prime.


Grey Matter is a greyish lavender-skinned, frog-like, bipedal alien that is only four inches tall with large purple eyes, which have rectangular pupils and horizontal eyelids. He has rotten spots on his body, small purple tendrils which are cut at the tips came at random places on his head. His teeth are yellow. The tips of his fingers are completely eaten away showing bone. He wears a purple & black uniform similar to the straitjacket Neonzarro wears, with buckles around the knee area.

He wears the Omnitrix symbol on his back.

Powers & Abilities

Has enhanced intelligence.

Thanks to his small size, can get into very small areas.

Can climb on walls.

Can breathe underwater.

Has sharp teeth.

Has a prehensile tongue.


His small size gives him great disadvantages.

Is the natural prey of Omnivoracious.


  • Due to the fact Neonzarro's brain is rotten, his version of Grey Matter is smart as Neon Prime.
Community content is available under CC-BY-SA unless otherwise noted.