Beel
Beel is the lobby receptionist for the 4-cent_garbage.com Building prior to its destruction in Sonichu #10. He is a red humanoid with devil horns and wings. Whether or not he is supposed to be the Devil/Satan, some minor demon/devil, or simply a man who looks like a devil is uncertain. The name "Beel" is probably a wordplay on Beelzebub (Hebrew בעל זבוב, Ba‘al Zəbûb, "Lord of the Flies").
Beel is depicted as a large, muscular red demon wearing nothing but cut-off jean shorts, suggesting that his appearance was inspired by that of Satan in South Park, and possibly Him from The Powerpuff Girls (an effeminate antagonist with a red, devil-like appearance).
Appearances in Sonichu
Beel's first appearance was as an unnamed receptionist in Sonichu #8. When Sonichu and Rosechu arrived at the 4-cent_garbage.com building for their appointment with Jason Kendrick Howell, he directs them to the top floor, which he idiosyncratically describes as "66+6". When Sonichu clarifies that this is simply the 72nd floor, Beel becomes annoyed and shoos the Electric Hedgehog Pokémon on their way. Sonichu takes umbrage with Beel's unprofessional conduct, until Rosechu reminds him of the story of Joseph.
Beel returned in Sonichu #10, this time serving in a more active role as Jason's agent. When Chris-Chan Sonichu arrived at the 4-cent_garbage.com Building to destroy it, Jason trapped him in a cage, and Beel attempted to steal the Medallion from him, thinking it to be the source of his powers. However, to the surprise of everyone, Chris discovered that his powers in fact stem from his High School Ring, which he uses to retrieve his Medallion. His powers restored, Chris fires a Hyper Beam at Beel, slamming the demonic henchman into the 4-cent Garbage building, presumably killing him.
However, Beel returns ten pages later to warn Jason that the building would soon collapse from the musical assault by Christian and the Hedgehog Boys. When Jason escapes and retires, Beel condemns two others, Clyde Cash and Jack Thaddeus, for being homo trolls, and takes shelter in the basement, leaving them to their fate.
Backstory
When Jack asks Beel how he survived Chris's Hyperbeam, Beel points out that working in the 4-cent_garbage Building is his personal hell, and so there's really nowhere else for him to go upon his death. According to Beel, he was condemned to work for 4-cent_garbage, and after it is destroyed, he will simply be reassigned to service Count Graduon. From this, it seems that Beel is cursed to walk the Earth for eternity as a lackey for one villain after another.
Beel also mentions (with regret) that he was once the "main assistant" to Adolf Hitler. It's unclear if he worked for Hitler as a demon, or if he was a high ranking Nazi who was later transformed into a demon. If so, this would mean Beel may be the tormented soul of someone in Hitler's inner circle, such as Hermann Göring or Joseph Goebbels. In any case, Beel's service to Hitler got him cursed to toil in the service of villainous groups like 4-cent_garbage.com. Even so, Beel still looks down on Clyde and Jack Thaddeus. So even though he's a Satanic Nazi troll, he is not quite as evil, in Chris's eyes, as two homosexuals.
Possible gay subtext
Beel's appearance is unavoidably homoerotic. Given Chris's repeated distaste for homos, as well as male nudity in general, it is curious that he would be comfortable with this depiction. This may be Chris's ham-fisted attempt to literally demonize homosexuality, or the expression of his unconscious lust for big, half-naked, muscular men. Hell, just look at the guy:
