Sentinel

The Sentinels were first created by Dr. Bolivar Trask, who intended to use them to save humanity from what he saw as a threat to the species' existence in the form of mutants.

Sentinels are generally about 20 feet tall, can fly, shoot various weapons (primarily energy blasts and restraining devices) from different parts of their bodies, and detect mutants at long range. Some of them can even change form and re-assemble after being destroyed.

2D Fighters
A Sentinel was destroyed by Magaki in the opening round of this tournament.

Children of the Atom
One of the Sentinel units eliminated Banshee in the first round, but could not escape Magneto in the second.