Created by writer Steve Englehart and artist Al Milgrom, the character first appeared in The West Coast Avengers vol.

[4] Master Pandemonium battled the West Coast Avengers once again, as well as Daimon Hellstrom, Hellcat, and the demon Allatou.

Alongside the West Coast Avengers, he battled the Cat People in the Land Within, and regained one fragment of "his" soul.

[6] Master Pandemonium then abducted and absorbed Thomas and William, the "children" of the Vision and the Scarlet Witch, who were actually two of the soul fragments he sought.

He had reverted to a more human look, and claimed to be in hiding due to the belief his schemes had helped precipitate the Scarlet Witch's breakdown.

Former Ghost Rider Danny Ketch appears, bludgeons him with a bat and wishes to use his chest as a doorway in order to make a deal with Satan to defeat Zadkiel.

Later in the series, the new Caretaker is ambushed and attacked and rendered unconscious by a seemingly recovered and much more sinister Master Pandemonium in the evil church that the child Anti-Christ, dubbed as Kid Blackheart, leads her to.

[10] Using the hole in Master Pandemonium's chest as a doorway to Hell, Kid Blackheart calls forth an army of demons so he can march on Heaven and claim it for himself.

[14] Pandemonium eventually made his way to San Francisco, where he formed a cult of demons to boost his power, but he was eventually defeated by the Superior Spider-Man and Doctor Strange, Strange redirecting a demonic portal Pandemonium had attempted to open to trap the villain back in Mephisto's realm.

Darby Harn of Screen Rant called Martin Preston "one of the best Scarlet Witch comics characters.