The Mutant Stephan Heroes

During the Young Stephan Heroes's misadventure with time travel a version of the original stephan heroes got mutated into Animal like Mutants and then got thrown into time, after resetting the timeline and returning everything to normalcy the alternate mutated stephan heroes appeared in the present, with their version of events erased and no home to return the young stephan heroes and stephan heroes: original nine decided to take their mutated friends in and help them with their new found powers and adapt to their new forms.

Thus a new team is born known as the Mutant Stephan Heroes (or Stephan Mutant Heroes depending on who call out for them)

Stephan-X the Lion

Since mutated into a humanoid lion this version of stephan-x has gained some new abilities (such as summersaults, jumping higher, and claws sharp as nails.) and some powers (roars with waves of ice, incredible superhuman strength, and ice on tail expends to blades) while his changed on the outside, his desire to help and protect others from harm remains unchanged.