Grey Matter (Earth-68)

This is the version of Grey Matter that appears on Earth-68, the universe owned by Dioga beta. Grey Matter is the Omnitrix's DNA sample of a Galvan from Galvan Prime.

Appearance
He looks like a humanoid frog with big yellow-green eyes, but inUltimate Alien,he has the normal plain green eyes. He appears to be wearing a suit of some kind and has a stripe on his head that starts from the back of his head to his forehead, similar to Four Arms. He has the Omnitrix symbol on his chest.

Powers and Abilities
Same as canon Grey Matter.

Weaknesses
Same as canon Grey Matter.

Dimension 1 (John Smith 10)
Grey Matter is unlocked after John uses the Omnitrix to scan Azmuth.

By John

 * Azmuth (episode) (first appearance)
 * Joyride (John Smith 10) (accidental transformation; selected alien wasUpgrade)
 * Highbreed Rising
 * Time Walker
 * John Smith 10 Christmas Special

By  Gwen

 * Inspector Number 13 (John Smith 10) (accidental transformation; selected alien was Buzzshock)

By John

 * Heroes United Part 1 (John Smith 10) (first re-appearance)
 * Escape
 * The Alliance (John Smith 10)
 * "I Decree"
 * Trip to Naboo
 * Ultimate Weapon (John Smith 10)

Clone Created by  Dr. Animo

 * Couples Retreat (John Smith 10)

By Ultimate John

 * Separatists (episode)

Distant Worlds

 * War Game (first re-appearance) (accidental transformation; selected alien was Jetray)
 * Be Afraid of the Dark (John Smith 10)
 * Dactyl and the Hunter (accidental transformation)

Phantom Watch

 * Lost Magic (first re-appearance) (accidental transformation; selected alien was Goat Foo)

Ancient Times

 * Ahmad Smith 10 and John 15, Part 2 (first re-appearance) (By John in Ahmad's body) (selected by Eon)
 * Herald of the Gods
 * Forced to Fight (accidental transformation; selected alien wasHeatblast) (goes Ultimate)
 * Sea of Monsters (goes Ultimate)
 * Fear (John Smith 10)
 * The Labyrinth (goes Ultimate)

Spacewalker

 * Go! Part 1 (first re-appearance)
 * Sozin's Comet Part 1 (by clone 1)
 * Equalists (by clone 2)

By Kairi

 * End of the World Part 1 (first re-appearance)
 * Wonderland Part 1 (John Smith 10) (unintentional transformation; intended alien was Light Cream)
 * Castle Oblivion
 * Radiant Garden

By John

 * Battle of 1000 Heartless Part 1
 * Darkside (episode)

Omniverse

 * Fistful of Clones (first re-appearnace)

Dimension 777 (John Smith 10: Final Fantasy)
Grey Matter first appears as a mechanic for  Carl Nesmith, keeping his suit running. Rook gains possession of him, then returns it to John.

Summoned by Carl Nesmith

 * Old Rivals

Summoned by Rook

 * Change in Plans
 * Friends (JSXFF)
 * Into the Hole

By John

 * Phantom's Wrath Part 1 (goes Ultimate)