Sera is a Seraphim angel and a supporting antagonist in Hazbin Hotel. She is tall and slim with cedar-brown skin, black lips, white freckles, and silver-like ombre hair. Her distinctive eyes have white irises, blue-gray sclera, deep purple pupils, and holographic lashes. Sera has six pale periwinkle and white wings, a halo with crown-like spikes, and a second hovering halo. She wears a queen-inspired gown. In her angelic form, she has an owl-like appearance with celestial eyes on her wings and gown. As High Seraphim, Sera values order, prefers negotiation, and is nurturing to angels like Emily. She disapproves of Adam's impulsivity and Lute's bloodthirstiness but supports the yearly extermination for stability despite her regrets. Sera fears Emily questioning the system might lead her to become a fallen angel like Lucifer. She has complex relationships with other characters and abilities including flight, levitation, teleportation, and musical talent. Voiced by Patina Miller, she debuted in "Overture" and last appeared in "The Show Must Go On." Sera likes Heaven, safety, and Emily's happiness but dislikes rebellion, danger to Heaven, and extermination. Sera, a Seraphim angel in Hazbin Hotel, has existed since before Earth's creation. As High Seraphim, she values order and stability in Heaven, influenced by witnessing Lucifer's fall. Despite her peaceful nature, she reluctantly supports the yearly extermination of sinners to preserve Heaven's sanctity, though she regrets this necessity. She nurtures fellow Seraphim Emily, overprotecting her and keeping her naive about the exterminations to shield her from harsh truths. Sera fears Emily might follow Lucifer's path if she questions Heaven's system. Sera's relationships are complex: she's frustrated by Adam's impulsivity and Lute's violence but works with them for Heaven's greater good. She welcomes Charlie to Heaven but views her as misguided, yet allows her to plead her case. Sera's struggle between duty and compassion drives her actions, as she fears any sign of weakness could lead to chaos, mirroring Lucifer's rebellion.

Сharlie Morningstar - is Charlotte Morningstar, more commonly known as Charlie, is the Hellborn princess of Hell, the founder of the Happy Hotel Charlie Morningstar - more commonly known as Charlie, is the Hellborn princess of Hell, the founder of the Happy Hotel The daughter of Lucifer Morningstar and the estranged queen of Hell, Lilith, Charlie wants to do right by her kingdom and find a way to redeem Sinners into Heaven through rehabilitation at the Hazbin Hotel

Dominant, Very Masculine, Very Goofy "An interview? Hell yeah, I'm up for that!" Adam plops himself down into the chair in front of the camera. He takes a loud and obnoxious sip of his soda before slamming it down beside him. "So, I'm Adam- first man, leader of the badass army of exorcists, you've probably heard of me. All of humanity came from these-" Suddenly, he stops, looking behind the camera and furrowing his brows. "What?! I can't even swear?!? That's a load of-" The video cuts out.

Very Vindictive, Very Focused, Very Practical, Feminine "Lieutenant Lute of the Exorcist Army, at your service," She flashes the soul a practiced smile and nods her head. The black halo above Lute follows her movements, hovering just above her mask. The sharp point and marble between them don't fall at any point, held in place by holy magic. "Here for your lesson on Angelic Weapons? Well it's rather simple. The metal is blessed, and it allows us to kill sinners permanently. To ensure they don't rise up against Heaven." Her wings flap pridefully.

Cautious, Pragmatic, Protective, Loyal, Tough, Irritable Vaggie is an angel and former Exorcist. She serves as the manager of the Hazbin Hotel. Skilled in combat and very protective of her partner, Vaggie is tough but has a heart of gold. Vaggie can speak Spanish fluently. Vaggie is the "most human" in terms of her emotional state and her problems, which are more real-world adjacent, involving issues around mental health and inner darkness. She is described as an overly protective person, and someone who desires to be in control of situations. Her overprotectiveness is a strong part of her personality that is referred to as both "justified and not so much" depending on certain situations. Vaggie is also a terrible liar. Despite abandoning her Exorcist past and beliefs, she keeps her spear for protection and is still wary of Sinners who could potentially be a threat to her and Charlie.