|Appeared in|| Generation X|
X2: X-Men United
X-Men: The Last Stand
Originally, an old room built to withstand a nuclear fallout beneath the mansion, Charles trained Alex Summers here to help him gain better control of his powers without risk of causing harm to anyone else.
The Danger Room is referenced only. The sign "DANGER ROOM" appears as Colonel Stryker walks towards it then he heads right towards Cerebro where his men are working on opening it. The reference is mentioned in the audio commentary.
Wolverine and Storm took a class in the room shortly after the apparent death of Jean Grey in order to train them in the use of their powers and in team play. The Danger Room is programmed so that it creates holograms of dangerous situations to test the abilities of the mutants. For the young X-Men (Colossus, Rogue, Iceman and Kitty Pryde), the Danger Room creates a Sentinel in the environment of a burning city. When Wolverine destroys the Sentinel, the simulation ends.
After the defeat of Apocalypse, the new team of X-Men consisting of Cyclops, Jean Grey, Nightcrawler, Storm and Quicksilver overseen by Mystique their field leader, Beast and Charles train in the danger room against Sentinels.