The origin of the cyclops myth, the Unicla once roamed the planet. Until it got it's foot stuck in a deep crack where two glaciers met. There it froze to death. Until a group of scientists found a well preserved sample. Thinking it was a part of a woolly mammoth, they began to create a clone. Like all good science experiments, they create multiple clones at once (in this case, 12), just in case one many didn't make it. They all did.

Strength
Enormous size and strength.

Strength Source
Innate ability.