Grey Matter — Ben 10 Character Profile

Character Facts

Played by

Richard Steven Horvitz

Appears in

Ben 10 (2005)

Role

Supporting

More characters from Ben 10

• Ben Tennyson (Tara Strong)
• Gwen Tennyson (Meagan Moore)
• Grandpa Max (Paul Eiding)
• Stinkfly / Wildmutt (Dee Bradley Baker)
• Ghostfreak / Heatblast / Vilgax (Steve Blum)
• Four Arms (Richard McGonagle)
• Diamondhead / Wildvine / XLR8 (Jim Ward)
• Female Cannonbolt / Policewoman (Vanessa Marshall)
• Kevin Levin (Michael Reisz)
• Teacher / Jamie (Jennifer Hale)
• Harold / Escape Artist / Emcee (Dave Wittenberg)
• Ultimos (Tom Kane)