The Prison Conoy was a mobile prison designed to house extremely dangerous mutants.
History[]
X-Men: The Last Stand[]
With help from Pyro, Magneto recruits Callisto, Arclight, Psylocke, Ash, Quill and several other mutants. They attack the mobile prison holding Mystique to free her, also freeing Juggernaut and Multiple Man. Mystique, shielding Magneto from a cure dart, is hit by it and loses her mutant abilities. Magneto abandons her as a result.