Commension

Commension was a machine that was eventually given a body of its own. Its original goal was to annihilate mutants, but after being weakened by Lucas, Commension created a clone of itself as a safety precaution.

During an incursion on its base by Lucas, Commension self-destructed to kill Lucas, but the latter survived. Commension's ultimate weapon was eventually created in the form of Siege.