Calvin Rankin (Mimic) vs Hyperion (the Exiles versions).

Mimic can mimic the power of five mutants and for this battle he uses Colossus' skin and strength, which account as one power, Cyclop's optic blasts, Kurt's teleportation, Northstar's flight and speed and Wolverine's regenative abilities, if necessary. Keep in mind he has each ability at about half their potency. Hyperion is basically a superman knock off as he as invunerability, super strength (above the 100 class range), and speed. He can also project powerful optic beams probably far superior to Cyclop's even at full blast. So who would you put your money on?

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Hyperion

to be honest hyperion is alot more powerful than superman. In the exiles book he beat the avengers, fantastic four and the x-men by himself with no struggle at the same time ( he broke thors kneck) and it was also stated that he went up against galactus and destroyed him. The guy is totally indestructible ( has no weeknesses). The current hyperion is based off precrisis superman, he has no limit. If superman was to go up against him, i can see him needing some help from the rest of the jla.