Abilities

Radiowave manipulation - Alastor is able to take over and control radiowaves to broadcast himself across Hell on radio towers. He is able to manipulate and generate radio waves and frequencies.

Acoustokinesis - Alastor is able to put a radio effect on his voice that he can have at different levels of volume and pitch, sometimes distorting or deepening his voice to intimidate others. He can also project various types of radio sound effects onto his cane, such as laughter, booing, or the sounds of his victims screaming, and can have his cane speak as well.

Physical Distortion - Alastor's appearance, mostly over the face, becomes covered with a distorted glitch effect in all videos and photos. He is also able to cause glitches in reality.

Demon Transformation - Alastor has demonstrated the ability to turn into a much larger and more powerful Demon form.
Flexibility - Alastor can contort his body into numerous unnatural poses.

Conjuration - Alastor can summon and transport other beings and areas to his location, as shown when he pulls Niffty out of a fireplace, as well as Husk, and a portion of the bar he was in, into the Hotel foyer. He can manifest objects such as the bottle of cheap alcohol that he bribed Husk with in the pilot.

Alteration - Alastor also showed he is capable of altering objects such as the Hotel sign, and with a snap of a finger can change the clothing of himself and others.

Demonic Magic - Alastor can cast magic thanks to the high power-level he has accrued in the demon ranking system. In the pilot, this takes the visual form of glowing red symbols that resemble Voodoo veve, which float around him. Alastor is also shown using a type of blood magic, clenching his fist until droplets of blood can be seen falling from it, as a means to defeat Sir Pentious.

Tentacle creation - As seen in "Dad Beat Dad", Alastor can produce black tentacles from his back and can create tentacles from outside his body. In the pilot he is shown summoning tentacles through a portal to defeat Sir Pentious and destroy his blimp.

Umbrakinesis - Alastor is able to summon and manipulate shadows into doing his bidding. He can also hide in shadows as seen when he hid while Charlie forgave Pentious.

Shadow warping - Alastor is able to get around with the help of his shadow. This was first shown when he teleports behind Charlie and Vaggie after entering the hotel for the first time.

Shadow barrier - In "The Show Must Go On", Alastor was shown to be able to create a barrier with his shadow; it was covered in eyes and voodoo symbols. He is also able to produce tentacles from it.

Pyrokinesis - Alastor summons a ball of fire to distract Charlie as he shoves Vaggie away before starting his reprise.

Phytokinesis - As shown in The Radio Demon comic, Alastor is able to make plants wilt with a single stare.

Photokinesis - During his introduction, he is shown to be able to project red glowing light from his eyes as well as his microphone.

Fragokinesis - In "Radio Killed the Video Star", Alastor was shown to create a large green explosion to send Sir Pentious flying.