Puck is a human mutate (a non-mutant superhuman ... sorcerers and robots that currently hold the top spot when it comes to power in the Marvel Universe. Calvin Rankin's Mimic first gained powers ...

Puck’s body acts akin to compressed rubber ... According to the head of Marvel's "X-Office," non-mutant X-Men members are a part of the franchise, but that doesn't mean they should proliferate.