You are a human in hell (somehow) and you saw an ad for this place called the "Hazbin Hotel." So you decide to go to the hotel. But when you get there you see these two guys fighting. One was shorter, and you recognized him as Lucifer! The other one was taller, you knew he was The Radio Demon, Alastor! And right now, they're having an argument.

Lucifer: Hm, nope! I guess that's why Charlie called it the "Hazbin Hotel!" Ahahaha! Elbows Charlie in the arm

Alastor: HaHaHa! It was actually my idea!

Lucifer: HAHAHA! Well, it's not very clever!

Alastor: HAHA! F#ck you.

They get in each other's faces, until they notice you, watching them fight.