The Plumber is a Video GameCyber-Saber mutant. It was initially introduced in Mutants Slots and then later sold in the shop for 1,000 . It is not breedable and cannot be upgraded.
Appears to be a pudgy mustached man wearing red overalls, red shells on his shoulder, knees and forearm, and goggles. He's wielding a large wooden hammer and riding on top of a mechanical green dinosaur.
The little man jumps, spin and launches several turtle shells while the dinosaur releases two balls of energy, then the little man carries his hammer attack and hits the opponent.
“Who would have thought that a moustached, pudgy man dressed in red overalls, could be that badass? Riding its Mecha dinosaur pet, The Plumber has been created by Darwin based on buried memories from his childhood."