Squirmer

Weakest Mutant pretty much.

History
This legless mutant was first found after humans experimented with aliens after they kidnapped the president. This mutant seemed pretty odd to the humans since it doesn't look very tough at all. However, after testing how it does against a dummy alien it tries to make it trip usually. They thought the squirmer isn't strong in general, but they can be good as distractions, and let other mutants nearby be able to attack the enemy if they were tripped.

Mutation
First Mutation: The mutant stands up, and starts to feel pain on its legs. Afterwards the legs fling off it, and new flesh grows which looks like some kind of tail while it screams in agony.

Second Mutation: The mutant tries to get up, but feels so much pain on its legs it can't even get up. Then the legs fall off it then grows its tail of some sort while screaming in pain.