Challengeer is cyborg-like superman wearing aviator outfit with metal boots and three rockets strapped onto his back. He wears a metallic helmet with red lenses and some sort of respirator underneath it. His hands replaced by triangular blade gloves with blue energy surging through it.
In later versions, he has some additional details on his outfit and rockets, different colored energy and different masks.
- Attack: Low
- Life: Average
- Speed: Fast
“The Challengeers result from the Ragna Rok Project, an experiment involving the combination of soldiers in their death throes with metal bodies to create supermen. If most only died slower and in greater pain, the few surviving one saw their potential multiplied by ten. Despite the obsolescence of this technology, they are formidable opponents"
- This mutant's design is a nod to both The Rocketeer (from the comics and movies of the same name) and Karl Ruprecht Kroenen (from the Hellboy comic books and movies).
- This mutant was released in the slots in May 8, 2015.
- This Mutant's head in Gold and Platinum version also resembles Ultraman Ace