Clifford Zmeck aka Major Force is a supervillain in the DC Universe and is the arch-enemy of superhero Captain Atom. Major Force is the result of the same government project that gave Captain Atom his powers (experimenting atomic energy with an alien metal). Zmeck had a criminal background and was granted a pardon in order to serve his country as Major Force. However his brutality and conflict with Captain Atom resulted him going rogue and becoming a supervillain.
Major Force's powers are similar to Captain Atom (superhuman strength and durability) but given more alien metal was used in his creation, Force's powers come from a different spectrum of energy allowing him to blast Dark matter from his hands and manipulate matter.