Ben 10 Fan Fiction Wiki
Ben 10 Fan Fiction Wiki
Grey Matter
General Information
Species Galvan
Home Planet Galvan Prime
Body Humanoid Frog
Powers and Abilities
Abilities Enhanced Intelligence
Enhanced Agility
Enhanced Flexibility
Enhanced Jumping
Wall Crawling
Underwater Breathing
Weaknesses Small Body
Used By Ben Prime
Ben Delta
Delta Ben 10'000
Ben 10'000
Ken Tennyson
Appears in Ben 10: Reboot Revolution

Grey Matter is the Omnitrix's DNA sample of a Galvan from the planet Galvan Prime in Earth-1010.


Grey Matter is a 6 inch tall humanoid who, as his name suggests, has grey skin. He has a large head with huge green eyes. his hands and feet are also disproportionately large given his size. The Omnitrix dial is on his back.

Delta Dimension

In the Delta Dimension, Grey Matter's head is rounder and his eyes are orange.

Powers and Abilities

Grey Matter is, in terms of raw IQ, Ben's smartest alien. He specialises in technology and biology. He can create complex machines from spare parts, understand a machine's function easily, and make sophisticated repairs to complex machinery with little prior experience.

Using his knowledge of biology, Grey Matter can stimulate large creatures in order to manipulate/control/incapacitate them such as exploiting pressure points.

Grey Matter's small size allows him to climb inside tight spaces, such as inside machinery. He can scale walls thanks to suction pads on his skin.


Being so small, Grey Matter is fairly fragile. He struggles to fight opponents larger than himself.

When it comes to physics and related subjects, Brainstorm outranks Grey Matter in terms of intelligence.


Grey Matter was one of the aliens used by Ben 10'000 to invent the Biomnitrix. Much to Ben 10'000's annoyance, Ken figured out how to use Grey Matter to unlock the Master Control in his Omnitrix. Both of these events took place in the future of the Prime Timeline.

Ben 10: Reboot Revolution

Grey Matter was briefly used by Delta Ben 10'000 in Ten Over Ten Thousand to avoid his photograph being taken.

Grey Matter was used again later by Ben Delta to help Azmuth figure out why Blukic and Driba's Dimension Hopper wouldn't work. Although Azmuth seemed to already know, Grey Matter quickly realised out how to fix it.

In the next chapter Ben Prime used Delta Grey Matter to try and study Time Breaker Ben, however he was disoriented by the constant resets and couldn't formulate a plan to defeat the Time Breaker.


Ben 10: Reboot Revolution

Delta Ben 10'000

Ben Delta (using Prime Omnitrix)

Ben Prime (using Delta Omnitrix)


Ben 10: Reboot Revolution
Death of Ben 10 Aaronbill3 Ben 10: Road Trip
Ten Over Ten Thousand - No Watch, No Problem!
Chapter 1 - Chapter 2 - Chapter 3 - Chapter 4 - Chapter 5 - Chapter 6 - Chapter 7

Prime Dimension
Ben Tennyson - Gwen Tennyson - Max Tennyson
Rook Blonko - Kevin Levin - Sella - Fistina
Magister Patelliday - Azmuth - Blukic - Driba
Professor Paradox

Delta Dimension
Ben Tennyson - Gwen Tennyson - Max Tennyson
Ben 10'000

Time Breakers: Time Breaker Tetrax - Time Breaker Ben
Techadon Degradations: Lenopan Degradations

Prime Dimension
Brainstorm - Chromastone - Clockwork - Goop - Gravattack - Grey Matter
ImmoBile - Jetray - Lodestar - Spidermonkey - Spitter - Stinkfly - Swampfire - Upgrade

Delta Dimension
Cannonbolt - Clockwork - Diamondhead - Four Arms
Grey Matter - Heatblast - Overflow - Stinkfly - Upgrade - Wildvine - XLR8