Morlocks (Earth-10005)

The Morlocks are a group of mutants that live in the sewers of New York City.

X2: X-Men United
Stryker has a file on the Morlocks on his computer at the Department of Domestic Security and Defense headquarters and was seen by Mystique when she was looking for the files on Magneto.

Behind the scenes
To be added

Trivia
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X2: X-Men United
To be added