Grey Matter

Grey Matter (voiced by Richard Steven Horvitz) is a Galvan (the former a play on actual grey matter and Greys, the latter a play on galvanization) from the planet Galvan Prime and is the 5th Alien to appear on the show.

Abilities
Galvans are bred to be naturally intelligent and intuitive, learning quickly about any given object from just a simple glance. Their bodies are designed for the same purpose: soft, flexible bones and slimy skin allow Galvans to squeeze into all including the smallest of spaces. It also makes grabbing them somewhat difficult. They have microscopic pads on their fingers which also allows them to stick to most surfaces and they possess sharp teeth and a long, sticky tongue. Galvins are as smart as Cerebrocrustaceans as Azmuth argued with Ben (as Brainstorm) over who is smarter (in War of the Worlds).

Not built for combat, Grey Matter evades and outsmarts his enemies, rather than fighting them head on. As Grey Matter, Ben benefits from the form's specialized breeding and extraordinary intelligence, giving him the ability to almost instantly understand any technology.

Showing a more light-hearted side of the Omnitrix, Ben, despite being able to understand almost any device, does not consciously comprehend what he is doing, leading him to remark as much. Grey Matter has been his form of choice when needing to be stealthy or intelligent, but has also been a popular target for accidental transformations, such as in "A Small Problem". When this accidental transformation happens, Ben usually says, "Oh man...not Grey Matter".

Planet
Galvan Prime is a tiny world by most standards (the series does not give a definitive measurement), and hence Galvans are on average about five inches tall.

However as stated by Azmuth, Galvan is also the most advanced race in the galaxy. Claiming that Galvan was the only race with the technology to stop the highbreed (Unfortunately, the planet was also attacked and almost demolished in War of the Worlds.

Trivia

 * Grey matter's have small voices.


 * It can be presumed that Grey Matter's DNA was added by the creator, Azmuth, who was also a Galvan.
 * In a pop-up during Ken 10 Grey Matter's brains, along with Benviktor and Brainstorm, were used to create Kenny's Omnitrix.