Benesis

Benesis is Ben's Carl Nesmith alien. Ben was able to become him by having the Omnitrix mutate him into a Galvanic Mechamorph and scan Carl for the Human transformation.

Appearance
Benesis looks similar to Carl Nesmith, but with a black, green and white color scheme. He has the Omnitrix on his chest instead of the Nemesis logo.

Powers
Benesis has the same powers as the Nemesis suit, including flight, shooting strong blasts out of his hand and firing rockets out of his shoulder.

Appearances
Benesis' only appearance was in Our Nemesis where he is used to fight Nemesis. Ben deleted Nesmith's DNA afterwards, and seeing as Nesmith died in an explosion, Benesis will never appear again.

Trivia

 * The original explanation for how Benesis is even possible was "I dunno." This was later changed because it was weak.