Ben 10 Fan Fiction Wiki
Ben 10 Fan Fiction Wiki
Grey Matter
Grey Matter

Ken as Grey Matter

General Information
Species Galvan
Home World Galvan Mark II
Body Humanoid
Powers and abilities
Abilities Super Intelligence
Enhanced Agility
Enhanced Flexibility
Enhanced Jumping
Wall Crawling
Sharp Teeth
Underwater Breathing

Grey Matter is the Codon Stream's DNA sample of a Galvan from the planets Galvan Prime and Galvan Mark II.


Grey Matter is a gray-skinned, frog-like, bipedal alien, only six inches tall with large green eyes with little minus sign like pupils. He wears a white jump suit with a black stripe going down it.

Grey Matter wears the Protomatrix symbol on his chest and his eyes are dark green.

Powers and Abilities[]

  • Grey Matter's size belies his great calculative and technical intellect. He can create almost anything from spare parts and know the function of any device at a glance. Grey Matter's intellect serves as a problem solver and analytical help in difficult situations.
  • Grey Matter can sometimes manipulate living things by stimulating certain parts of their anatomy, if such beings can be controlled by external stimuli.
  • Grey Matter's size allows him to squeeze into small spaces and he can climb walls thanks to tiny suction cups on his skin. He also has sharp teeth and his slimy skin makes him difficult to grab.


  • Grey Matter's size makes him unsuitable for physical battle, so he must outsmart his enemies in a fight.
  • Animals like dogs and cats can be a problem, as they may see Grey Matter as food or toy.



  • Grey Matter is one of Ken's favorite alien.

Main Characters
Ken Tennyson | Gwendolyn Tennyson | Devlin Levin
Supporting Characters
Azmuth | Paradox | Ben 10,000 | Kevin Levin | Gwen Tennyson | Julie Tennyson | Max Tennyson | Manny Armstrong |Helen Wheels | Pierce Wheels | Cooper Daniels | Tetrax | Verdona Tennyson | Eunice | Xeno | Stone
Vilgax | Hex | Eon | Albedo | Helix | Aggregor | Andros | Fang | Charmcaster

Original Aliens

XLR8 | Four Arms | Heatblast |Way Big | Wildmutt | Wildvine | Diamondhead | Ditto | Grey Matter | Stinkfly | Upchuck | Cannonbolt | Upgrade | Ripjaws | Ghostfreak


Protomatrix | Infinatrix | DNAtrix | Plumbers Badge | Omnitrix | Omnitrix (Prototype) | Potis Altiare | Devlin's Car | Gwendolyn's Motorcycle | Xeno's Ship