Alastor the Radio Demon

Alastor "the Radio Demon" is a fictional character created by Vivienne "VivziePop" Medrano who primarily appears in the musical adult animated series Hazbin Hotel as one of the overlords of Hell. He was voiced by Edward Bosco and Gabriel C. Brown in the pilot and a series of music videos from 2019 to 2024, and by Amir Talai in the animated series since 2024. A constantly-smiling sinner, Alastor returns after a seven-year absence to help run a hotel known as the Hazbin Hotel, a halfway house founded by Charlie Morningstar, meant to rehabilitate the souls of those in Hell and help them earn a place in Heaven. Alastor seeks to guide and control Charlie, while also desiring to free his own soul from the service of an unknown being. He is often accompanied by the hotel's bartender Husk and housekeeper Niffty (whose souls he owns), and he is considered a rival by fellow overlord Vox and Charlie's father, Lucifer.

The character has received a positive critical reception, receiving particular attention as a prominent asexual character in media.