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X-Men: The Last StandEdit
In X-Men: The Last Stand, a simulation of a Sentinel was used in the Danger Room for Professor Xavier's mutant students to train and fight against. At the end of the session, Colossus throws Wolverine at the robot and he beheads it. The only part of the Sentinel ever made visible to the viewer is its decapitated head, while the rest is shrouded in fog.
X-Men: Days of Future PastEdit
To Be Added