In Reality Z-25 31-H, the Mutant was a weird, genetically-engineered creature, the work of Professor Madison. Resembling a large round head with a huge mouth, two beady eyes, and two legs, the Mutant was engineered for the sole purpose of being immune to dangerous teleportation and vortex-travel effects. Thus, to keep fragile items safe while jumping through a wormhole or portal, one would temporarily feed them to the Mutant, take the Mutant along, then have the Mutant spit them out.