Ben 10 Planet

Grey Matter

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Grey Matter
Grey matter rat
General Information
Species Galvan
Home World Galvan Prime
Body Humanoid Frog
Alternate Counterparts Grey Matter
Powers and Abilities
Abilities Enhanced Intelligence
Immense Life Span
Wall Climbing
Enhanced Agility
Underwater Breathing
Prehensile Tongue
Sharp Teeth
Enhanced Jumping
Voice Actor Carlos Alazraqui
First Appearance Ben 10: Race Against Time

Grey Matter is the Race Against Time Timeline version of Grey Matter.


Grey Matter looks just like the Main Timeline's Grey Matter in the original series, but Grey Matter appears to have short fur.

Powers and Abilities

Being a Galvan, Grey Matter has the same abilities as his species.


Being a Galvan, Grey Matter has the same weaknesses as his species.


  • In Race Against Time, Grey Matter rewired various machines in a diner to throw various food at customers.


Ben 10

Race Against Time Aliens
DiamondheadGrey MatterHeatblastWildmutt

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