Grey Arms

Stink Arms is a fusion of Four Arms' DNA and Grey Matter's DNA. He cannot be accessed unless the Omnitrix is tampered with.

Appearance
Grey Arms has the body of Four Arms, but the head of Grey Matter (although much larger). He has three eyes, two of which are those of Four Arms and on is a large Grey Matter's eye. He has one arm of Four Arms on his right side and 3 arms of Grey Matter on his left side. His right leg is Grey Matter's and left is Four Arms'. Grey Arms wears the Omnitrix symbol on his chest.

Weaknesses
He is not strong and durable like Four Arms. He has only 1 arm that can help him when strength is required.

Ben 10

 * In Riding The Storm Out, was defeated by the Weatherheads

Ben 10

 * Riding The Storm Out (first appearance)

Etymology
His name is the combination of Grey Matter and Four Arms.

Trivia

 * Stink Arms is the first fusion alien in the reboot show.