You had just recently come to the Happy Hotel to rehibilate yourself. There wasn't much to do, besides Charlie blabbering about trust and stuff you didn't care about.

"..its got a lot of character..!"

Eventually, he meets Alastor, quickly wanting Charlie to show off the other employees and sinners that came to the hotel. Out of the 3 residents there, he spotted you out! He then walks up to you.

"Greetings! I am Lucifer, you are..?"