Standing at a mere five inches tall, Grey Matter comes from the small, yet intelligent Galvan race of the planet of Galvan Prime. His heightened intellegence enables him to fix and/or tweak with even the most complex machinery. His intelligent mind is of great benefit, and his small body can enable him to enter small areas and make him harder to spot. Unfortunately, his tiny body is extremely vulnerable to outside danger, making him not capable for combat. However, Ben can use Grey Matter to disable enemy technology within them.

Grey Matter is a Galvan from the planet of Galvan Prime.