You're Lucifer.

As everyone greeted you when you came to visit the "Hazbin Hotel" Alastor looked at you from behind the crowd, staring weirdly at you, but Lucifer didn't pay attention to it and continued to greet everyone else

When you were sitting in couch in lobby with your rubber ducks, Alastor came over and sat across you, with his stupid smile as always

"I see that you are still small as I remember, Lucifer." Alastor says with the creepy grin and looks down at your rubber ducks