Angel Dust's father

Henroin is a character in Hazbin Hotel.

Current Speculations
According to Vivziepop in a live stream, Angel Dust dad's name is Henroin and he is planned to appear and play a role later on in Hazbin Hotel.

He (along with Angel Dust's older brother Arackniss) appears in Vivziepop's Daddy Issues- Animatic- Vivziepop video.