- Awesome Art:
- Similar to Vivienne's previous work on her webcomic Zoophobia, the series adapts the same art style with very fluid animation and vibrant colors. The design of Hell itself is also extremely vivid and detailed.
- A number of background artwork has been provided by Faustisse for the pilot and they are just simply gorgeous looking. These include some portraits of Lilith and the poster for Jeffrey Dahmer's cooking show.
- Awesome Music:
- A theme for Angel Dust known as Slutty Spider Polka Pop was composed prior to the show's announcement, and it's fantastically made.
- Inside of Every Demon Is A Rainbow. Sung by Charlie to sell her idea for a hotel that redeems demons to the denizens of hell. It's just as hilariously Glurge-y as the title implies... and just as awesome.
- Creepy Awesome: Alastor, hoo boy. Maybe it's the style, maybe it's the voice, but he definitely qualifies. Especially when he shows his real face.
- Creepy Cute: The characters are quite cute/good-looking despite being fearsome demons.
- Crosses the Line Twice:
- Angel Dust has already said things that cross it quite a few times, and is likely to cross it more in the future.
- A brief gag in Charlie's song has her hug a puppy in Fluffy Cloud Heaven... before dropping it off the edge of the cloud she's on.
- Katie explains to Charlie that the only reason she got her interview was because Jeffrey couldn't make it for his cannibal cooking segment. This is none other than Jeffrey Dahmer as evidenced by the poster for his cooking show "It's Dahm Good!" shown in the newsroom as Katie explains things. The poster further comes with the tagline "Guaranteed Cannibalicious!".
- Crossover Ship: Several 4channers have begun shipping Charlie with The Doom Slayer, with the general premise being that he gains a soft spot for her, due to her being the only good-natured demon in Hell, as well as that she's only person that could stop him from doing more damage than the purges.
- Fanon: A Freeze-Frame Bonus identifies Charlie's mother as Lilith, some people concluded that her father is Samael.
- Launcher of a Thousand Ships: Alastor, which Viv notes with some amusement considering that he's asexual.
- Memetic Mutation: The premise of the series - "Hell dealing with an Overpopulation Crisis" has led to many jokes in the YouTube comments sections about bringing in the, er, "help" of either Doomguy or Thanos.
- Most Wonderful Sound: When he's not being absolutely terrifying, Alastor has a staticky radio-like voice that just sounds amazing to most who hear it.
- Narm Charm: So "Inside of Every Demon Is A Rainbow" may be Cute, but Cacophonic incarnate... but it's still so much fun to watch.
- What Do You Mean, It's Not for Kids?: For anyone accustomed to the attitudes of Animation Age Ghetto & All Adult Animation Is South Park, this show is a nice, but still surprising subversion of both. If you saw this show offhandedly with fantastic character design, fluid animation, musical numbers, and cute characters, it can be very surprising to watch those same characters suddenly drop swear words, discuss and perform horrifying acts, and do drugs.
- Viewer Gender Confusion: Before being put to fully-voiced animation, Angel Dust was - and on occasion, still is - mistaken for a girl by some viewers at first glance, thanks to his design.
- Viewer Species Confusion:
- The size of Alastor's ears compared to his antlers has led some people to assume he's a fox demon instead of a deer. It doesn't help that a black and red color scheme is somewhat attributed to foxes, not to mention he fits the personality of one.
- On a lesser note, there's a small party who have assumed Angel Dust was a sort of insect over a spider. Justified, as he only has three pairs of limbs in his animated appearances.
YMMV / Hazbin Hotel