Waveman

Waveman is the fan name for a character in Alis Pastry.

History
Waveman first appeared in ECKVA11, during the Alis Pastry segment "QUIETBUG COMES HOME". In it, they're waiting outside of a cartoon representation of the abandoned house, waving as Quietbug begins to approach them. Quietbug continues to approach them until the screen suddenly glitches, showing the Doctor for a few frames.

Waveman does not have any other confirmed appearances, but they may have appeared in ECKVA15 and ECKVA17. ECKVA15 shows a series of unidentified individuals as they become extremely malformed, with strange growths coming out of them; one of them may be Waveman, or they may represent the same thing as Waveman. ECKVA17 shows a person kneel down and unscrew Quietbug, which may be Waveman; however, the person does not share many features with Waveman outside of being a person, and doesn't share consistent details seen on Waveman like the mark on their head.

Theories
It is theorized that Waveman represents the Interference. Waveman is seen beckoning Quietbug to the abandoned house; meanwhile, the Interference lured SHawkins deeper through the abandoned house. Waveman also has a strange mark on the side of their head, which is shown in multiple angles; this may match with BLOT being implanted into the Interference, as it appears to be some sort of device or parasite that lives in the brain.