- "Life isn't a musical, hon."
- ―Vaggie, responding to Charlie's idea
Vaggie is a slim demon with slightly dark gray skin. Her hair is white, with light pink stripes at the ends, and she wears a big pink bow in it. Vaggie's right eye is a light yellow and her sclera is light pink. Her left eye is missing and is replaced by a pink X, which glows red when she is angry or irritated.
She usually is seen wearing a pastel goth-like outfit; her mini dress is white with light-navy blue X's on the chest, a frill at the bottom, and a belt. All items being the same color. She also wears light-navy blue evening gloves and a choker of the same color. Her right stocking is light-navy blue and her left stocking has light-pink stripes. It's also worth mentioning that one of the straps of her dress is down, revealing a light-navy blue bra or tank top underneath.
Her design is vaguely themed after a moth.
Of the characters, Vaggie is shown to be the most sensible and prudent of the cast, as she constantly tries keeping Charlie and the hotel out of as much trouble as possible. Being short of patience, her cautious and protective demeanor quickly shifts to an explosive temper as shown from her interactions with Angel Dust and Alastor (the former always putting the credibility of the Happy Hotel in jeopardy and Alastor’s malicious tendencies). As per her short temper, she's quick to resort to violence whenever she gets too agitated, or someone else is making life hard for Charlie.
According to Angel Dust, Vaggie has a distrust towards men.
- Hand-to-Hand Combat: Vaggie has shown to demonstrate above average strength when it comes to hand-to-hand combat as she was able to swiftly punch a cameran off his chair in one hit.
- Weapon Proficiency: Vaggie has demonstrated her efficiency when it comes to handling weapons. This was first shown in the pilot wherein she brings around a harpoon for self defense.
- Bilingualism: Vaggie can fluently speak Spanish due to her being Salvadorian, as well as English.
- Wide Intellect: Vaggie is shown to be knowledgeable regarding Hell and how its systems work despite only being sent there quite recently. She has shown to know about the Overlords, how they make their way to the top, as well as how Alastor became the first mortal soul to overpower a pre-existing Overlord.
- Vaggie's Harpoon: Vaggie's harpoon is the first weapon that she is shown to possess. She brings it around with her throughout the hotel scenes in the pilot.
- Vaggie's real name "Vagatha" may be taken from the name "Agatha" which means "good woman" in Greek.
- She is Salvadorian and can speak Spanish.
- During development, Vaggie was in a romantic relationship with Angel Dust. This information has since been changed to her being in a relationship with Charlie.
- During development, Vaggie had originally died in the 1980s, but this was later changed to 2014.
- Christopher Niosi, who met Vivienne in the School of Visual Arts and was given Special Thanks to her Thesis Film Son of 666, was the one who suggested Monica Franco to Vivienne for the character before the pilot nor the casting was even in production.
- Vivziepop has confirmed that Charlie and Vaggie are indeed a canon couple.
- Vivziepop compares Charlie and Vaggie's relationship as to that of Jack Skellington and Sally's relationship from The Nightmare Before Christmas.
- When asked on who she thinks fell for the other first (Charlie or Vaggie), Vivziepop said that she doesn't actually know and feels like the way she has their relationship figured out was that they were really good friends right away and she thinks it was still during the time and kind of before the events of the pilot and it might even happen before the events of even the things Viv herself is planning before The Pilot. It also happens pretty far ahead of the events of a lot of stuff.
- Vaggie is the top in their relationship.
- According to Faustisse, Vaggie is bad at handling kids.
- Vaggie is in charge of the Hotel's Instagram account(@hotel_magnement).
- Vaggie's bow often reacts similarly to her emotions (it flares up when she does, it stays normal when she’s calm, it droops when she is upset).
- Her Spanish lines are left untouched in the Japanese dub, instead of being dubbed over in Japanese.
|Main characters||Hazbin Hotel||Charlie • Vaggie • Angel Dust • Alastor • Husk • Niffty|
|Helluva Boss||Blitzo • Millie • Moxxie • Loona • Stolas|
|Overlords||Alastor • Rosie • Valentino • Velvet • Vox|
|Supporting characters||Baxter • Cherri Bomb • Crymini • The Egg Bois • Exorcists • Helsa • Katie Killjoy • Lilith • Lucifer • Mimzy • Razzle and Dazzle • Seviathan • Sir Pentious • Tom Trench • Travis|
|Others||Arackniss • Barbie Wire • Collin • Eddie • Fat Nuggets • Fizzarolli • Robo Fizz • Henroin • Loo Loo • Martha • Mrs. Mayberry • Molly • Octavia • Ralphie • Roo • Stella • Tilla • Villa • Wally Wackford|