Mutant Frog

Mutant Frog is a common Earth frog, which was mutated by Dr. Animo's Trans-modulator in the episode Washington B.C.

Ben 10
It was the first mutated animal via Dr. Animo, to experiment the performance of his Trans-modulator this frog eats Roger. Dr. Animo's landlord and shortly afterwards spits him out.

With this frog, Dr. Animo attacks a supermarket where he mutates a bird and a hamster. He leaves with his frog and uses the bird for transport.

At the end of the episode all of the mutant animals were returned to normal. In Dr. Animo and the Mutant Ray, he appears at the beginning of the episode next to Dr. Animo. The mutant frog has a mind controlling band like the ones Aggregor used on the five aliens.

In Ben 10: Destroy All Aliens, it appeared at the very end to show what a normal day for the Ben is like.

Ben 10: Ultimate Alien
The frog comes back in It's Not Easy Being Gwen, where it now has yellow eyes and Dr. Animo takes control over it with a band in his head. Animo intended to use another telescopic mutant ray to create a army of mutant frogs but he was defeated by Ben, Gwen and Kevin.

Ben 10: Omniverse
The frog made a cameo in It Was Them in one of Ben's flashbacks when Dr. Animo had been defeated.

Appearance
It is a large frog with moss green skin, 4 red eyes (yellow eyes in Ultimate Alien) has 2 horns on the side of its head, and has orange circular spots on his back and legs.

Powers and Abilities
Since it is a frog it is capable of great leaps, and being larger, can jump greater distances. Its language is broader in scope and is more sticky and adherent. In Ultimate Alien, when Big Chill freezes Mutant Frog's feet, Dr.Animo actively encourages it through a device that makes the mutant frog create a warm aura around the frog that makes the ice melt. It also can break free easily from ice and other objects, due to the mass it has as even Four Arms could barely lift him.

Weaknesses
His only apparent weakness is that if his legs are frozen or covered with Diamond, he can't move for a while.