In order for the mission to succeed, Pete Wisdom had to release the dark magic and demons imprisoned in Avalon; while this led to the dark forces, headed by Satannish, creating an anti-Skrull barrier around the United Kingdom, it also meant demonic forces would now be trying to conquer the nation.
Dante is later contacted by Phineas, an elder demon imprisoned by Mundus.
In Kingdom Come, Alex Ross portrayed the character as a giant demon imprisoned in the Gulag.
"You mean there's a demon imprisoned in the metal?"
I was told he keeps a demon imprisoned in a crystal bottle.
Marvel states that Osiris is not a bad person as the Sins (demons imprisoned in Marvel's lair) did not want him.
The very small demon imprisoned within looked up from its tiny abacus and scowled.
I'd just about made it to the door when I remembered the demon imprisoned in my visitor's talisman.