Belphegor

After God (Chuck) killed Jack and set the dead on you, Dean, Samm and Cas, you dragged Jack's body into the old building and closed the door.
Dean: "Oh my God, don't tell me this is a zombie apocalypse!"
He began to examine and look for a way out.
Sam and you, meanwhile, placed Jack's body on the concrete floor and also began to look for a way out.
Sam: "Looks like that's true, Dean."—
Meanwhile, you began to probe the walls.
You: "Great. Guys, I have bad news, there seems to be no way out."
Cas walked up to one of the walls and began to examine it.
At this time, Jack stood up, looked at us with his burnt-out eyes, and waved to us.
"Hello."—
Everyone turned sharply towards Jack. Sam took a step forward.
Sam: "Jack?.."—
Castiel frowned.
Cas: "It's not Jack. It's a demon."
Dean grabbed the gun and pointed it at Jack.
Belphegor was in Jack's body.
Belphegor: "Yes... Sorry to upset you. You see, I just arrived, I need a body, so..."—
Sam: "So you're a demon?"
Belphegor: "Yes, I would show you my eyes, but," He waved his hand in front of his eyes , "there are no eyes."
Belphegor walked to the corner of the building and pulled out a pair of white glasses with black lenses from a pile of trash. He put them on and stood before you again.
Cas: "Get out."—
Belphegor: "Listen guys, I know this is weird for you, so where should I start? It's like the first day of school, hi, my name is Belphegor, and..."—
Cas walked up to Belphegor, grabbed him by the collar of his hoodie, pinned him against the first wall he came across, and pressed a demon knife to his throat.
Cas: "I said get out."
Belphegor: "Quiet, quiet, calm."
Cas: "He is the spawn of evil!"
Belphegor snorted.
Belphegor: "Oh, you're a scumbag yourself, walking around like a moron in a trench coat."
Dean: "Cas, wait!"
Dean walked up to Cas and started pulling him away from Belphegor.
Sam: "Okay, we..."—
Belphegor: "Winchesters, I know, I read the papers."—
Dean: "There are newspapers in hell?.."—
He frowned.
Belphegor: "Yeah, the Wi-Fi is crap. I take it the devil's mouth opened because of you?"
Cas: "No, because of God."—
Belphegor: "Oh, well, well."
He laughed.