The Seven Deadly Sins Note that
Lucifer represents the sin of
Pride. • '
(voiced by Iglehart), also known as Ozzie', a pansexual • '''''', the Queen of
Sloth. A lethargic, sheep-like demon who controls the drug industry of Hell. Based on
Belphegor. • '''''', the Queen of
Envy. A
leviathan-like demon with two heads. • '''''' (voiced by
Michael Cusack), the King of
Greed. An asexual the dragon-like King of
Wrath. He created the imps to be subservient workers in Hell. He struggles to control his rage. Based on
Satan.
Goetial demons •
(voiced by Jason LaShea), Stolas's sly ex-brother-in-law and Stella's brother. Based on
Andrealphus. • '
(voiced by Barrett Wilbert Weed, child voice by Juliana Sada), or simply ', Stolas and Stella's scornful and disenfranchised asexual • '''''' (voiced by
Jonathan Freeman), Stolas' neglectful father. Based on
Paimon. • '''''' (voiced by Georgina Leahy), Stolas' abusive and classist wife, and later ex. She grows furious with Stolas for cheating on her with Blitzo, going as far as to hire Striker to assassinate him. • '''''' (voiced by
Harvey Guillén), a member of the Ars Goetia who makes his debut as a supporting character in Season 2. Based on
Vassago.
Other inhabitants of Hell Hellborns • '''''' (voiced by Abe Goldfarb), Crimson's bodyguard. •
Arick "Burnie" Burnz (voiced by Rivera), an antagonistic fan-turned-hater of Fizzarolli. • '''''' (voiced by Jinhee Joung), Blitzo's twin sister and former imp circus performer. She resents Blitzo for accidentally killing their mother. • '''''' (voiced by Freeman), Blitzo's manipulative and greedy father, and the head of the circus in which Blitzo used to perform. • '''''' (voiced by
Eric Schwartz), a pansexual •
Rolando (voiced by
John Waters), a demon from the Envy Ring who disguises himself as a hotel manager in the living world. He has the ability to manipulate and possess his victims to commit his murders. • '''''' (voiced by
Morgana Ignis), Millie's
transgender sister. an imp inventor. • '''''' (voiced by
Jack Plotnick), Satan's therapist.
Sinners • '''''' (voiced by Monica Franco), an
otaku girl who is attracted to all things demonic and monstrous. •
"Karen Client" (voiced by Joung), a woman who hires I.M.P. to kill her ex-husband for leaving her for another man. • '''''' (voiced by Rogers), an inventor who hires I.M.P. to kill his business partner, Lyle Lipton. • '''''' (voiced by Michael James Ruocco), Loopty Goopty's business partner. • '''''' (voiced by Monsoon), a former human teacher who murdered her husband for cheating on her, before committing suicide in front of her students. After Mrs. Mayberry arrived in Hell, she hires I.M.P. to kill Martha, the woman her husband cheated with, before entering a relationship with Martha when she arrives in Hell. •
Rita (voiced by Monsoon), a former resident of the One Star Wonder hotel who was murdered by Rolando, which leads her to hire I.M.P. to investigate the establishment, which she believes to be haunted.
Inhabitants of Heaven • '''''', a group of
cherubs who serve the opposite purpose of I.M.P., helping and blessing humans on orders of souls in Heaven. After being stranded on Earth, they partner with D.H.O.R.K.S. to seek revenge on Blitzo. Members of C.H.E.R.U.B. include: • '''''' (voiced by Rivera), a sensible pink cherub, and the leader of the group. He resembles a human baby. • '''''' (voiced by Jayden Libran), a meek purple cherub. He resembles a lamb. • '''''' (voiced by Medrano), a yellow and spritely cherub. She resembles a lamb. • '''''' (voiced by Medrano), a snarky deer-like cherub who bans C.H.E.R.U.B. from reentering Heaven after they accidentally kill Lyle Lipton.
Inhabitants of Earth • '''''' (voiced by Michael Romeo Ruocco), an agent from an organization called D.H.O.R.K.S., who seek to protect the world from demons. • '''''' (voiced by Luttrell), an agent from D.H.O.R.K.S. and Agent One's partner. •
Bethany Ghostfucker (voiced by Henningsen), the star of a TV show about trying to have sex with ghosts. •
Bigfoot /
Mayor (voiced by
Tom Kenny), a mythical ape-like
cryptid who wanders the woods in the
Pacific Northwest, secretly living a double life as a town mayor. •
Counselor Jimmy (voiced by Franco), a camp counselor who works with Barbie Wire and is a target of I.M.P.'s. •
Driveso (voiced by Lyle Rath), a reckless driver who incites Blitzo's
road rage. •
Eddie (voiced by Horvitz), a child whom I.M.P. kills in the
Helluva Boss pilot. •
Frank McTickly Wrigglers (voiced by Plotnick), an orphan charity donor and children's entertainer. •
Gerardo Velazquez (voiced by
Jorge R. Gutierrez), a Mexican goat farmer who captures Blitzo and claims he is a
chupacabra. •
Luigi Paesano (voiced by Rath), mob boss father of Paulie Paesano. •
Paulie Paesano (voiced by Rath), a reluctant mobster whom Moxxie tries to help escape from his life of crime. •
Ralphie (voiced by
Maxwell Atoms), Martha's husband. •
William Diddle, a CEO who is killed and subsequently impersonated by Blitzo. • '''William Diddle's secretary''' (voiced by
Grey DeLisle), a sycophantic secretary. ==Reception==