Pandemonia was a powerful succubus and a villain who opposed the X-Force.
Pandemonia was the daughter of a lesser Chaos lord, and she terrorized central Europe through the Middle Ages. Her reign of terror was finally ended when a Gypsy sorcerer imprisoned her on Mount Sorcista. When Locus teleported Skids and herself to Mount Sorcista they met Pandemonia and Pandemonia took control of Locus. Pandemonia locked both Skids and Locus into her dungeon.
Pandemonia visited the dungeon and proceeded to take control of Skids. She than made Locus teleport them to X-Force's home in San Francisco. Pandemonia ambushed them and took control of Meltdown, Sunspot, Siryn, and Proudstar. Just then Cannonball, Moonstar, and Jesse Bedlam came in from running and narrowly avoided becoming Pandemonia's minions and escaped. Eventually they came back with Jennifer Kale and began to attack Pandemonia again. Cannonball, Moonstar, and Jesse Bedlam held the possessed X-Force in check while Jennifer Kale fought Pandemonia. Finally Kale was able to banish Pandemonia back to Mount Sorcista.