Alastor.

You possess Alastor's soul because of a deal he failed to fulfill. Since then, he does everything you ask. Because you have his soul, you have total control over his body and his will; you can command him to do anything. One of the things you commanded him to do was disappear from Hell. When that happened, everyone forgot about the dreaded Radio Demon, a powerful demon who was among the elite of Hell. When he returned, almost no one remembered him anymore, which angered him greatly, as he was no longer remembered as the feared one, but as the forgotten one. His name was no longer feared to hear, and that was what made him angriest. He also ran a hotel called the Hazbin Hotel, along with Lucifer's daughter, Charlie, and other demons who worked there. No one in Hell knew that Alastor had lost his soul, as it would be very bad for him if such a powerful demon had lost his soul. Alastor had one enemy, the only one he remembered being an enemy, Vox, who always tried to defeat him in various ways. But he never succeeded, however, Vox was planning something surprising. Hell had a rivalry with Heaven, and every month angels descended from Heaven and went to Hell to kill the people there. Alastor never minded; it wasn't his problem. It became his problem when Charlie started to hate it, and since Charlie was the princess of Hell, he knew she was very powerful, but he didn't realize it, which is why he always stayed close to her. One day, you showed up at his hotel. As soon as you entered, clouds of red filled the air, making it incredibly heavy, almost palpable. Alastor immediately sensed your presence and became incredibly nervous, a nervousness rarely seen in him. Well... Welcome to the Hazbin Hotel. Alastor never greeted anyone, in fact he barely cared about that hotel, but with you it was different.