Danger~Room

In the early days of the Institute it was filled with traps, projectile firing devices, and mechanical dangers such as presses, collapsing walls and the like intended to challenge the trainee. Meanwhile, an observer in the overhanging control booth managed the room's mechanisms to oversee the exercise while ensuring the subject's safety. Later the Danger Room was upgraded with robots for the X-Men to fight against.

After befriending the Shi'ar the X-Men rebuilt the Danger Room with Shi'ar hard-light holographic technology. These upgrades were largely added by Dr. Hank McCoy (Beast). The Danger Room is located in the X-Mansion; every destruction of the latter led to a rebuilding, and usually upgrading, of the Danger Room. The training facility has endured a lot of damage over the years, usually from X-Men trainings or X-Men going rogue, as Colossus did during The Muir Island Incident. Supervillains have often taken over the facility, most notably Arcade. It is has been suggested that the objects in the danger room are holograms surrounded by force fields, this was confirmed tragicaly when a student managed to kill himself by jumping from a holographic cliff face. It is also known that the Danger Room can display holograms in only 32-bit color, a restriction placed on the technology to increase speed and minimize maintenance down-times.