Halo City was built by Doom to act as a refuge for the Theatre of Pain's victims, with his Black Cabinet member, Morphine Somers, acting as governor. The X-Men became its guard, called the Protectorate. Halo City was flooded during a global cataclysm.
- Doom (Victor von Doom) (Formerly)
- Morphine Somers (Formerly)
- 22 Appearances of Halo City
- Minor Appearances of Halo City
- 4 Media Halo City was Mentioned in
- Images featuring Halo City
- Location Gallery: Halo City