Sera is a seraphim angel and a former antagonist turned major supporting character in Hazbin Hotel who made her debut in "Welcome to Heaven". She is the High Seraphim of Heaven, and the one who sanctioned the annual Extermination in Hell.

After personally witnessing the redemption of the sinner demon, Sir Pentious, Sera set about changing the rules of Heaven under the guidance of The Speaker of God.

Appearance

* Humanoid form

In her humanoid form, Sera takes the appearance of a very tall and thin woman with cedar-brown skin, black lips, white freckles, and a white streak going down her nose. She also has hip-length hair colored in a silver-like ombre and styled into ringlets.

Her eyes have white irises, blue-gray sclera, dark purple pupils, and dark purple thick eyelashes projecting from them. Atop her lashes are a pair of longer, holographic-like lashes, which are colored in a slightly paler shade of dark purple. Her eyelids are colored like her holographic-like lashes.

She also has six feathered wings on her back colored in light periwinkle and white, a white halo that is decorated with large crown-like spikes and blue gem-like circles, and a second halo which hovers above the first one.

Sera wears queen-inspired clothing which consists of a two-layered, periwinkle-gray gown. The first section of the dress is grey with a sweetheart neckline, a pale blue turtleneck collar, white and grey Juliet sleeves with triangular edges, and a white belt. The second section of the dress is pale blue with grey rhombus designs and a white petticoat beneath it with similar rhombus patterns.

* Angelic form

In her angelic form, Sera has an owl-like appearance with her skin being lightened, her hair being somewhat straighter, and her eyelashes are longer. She sports six white, bigger wings on her back with celestial eyes, and her halo is much larger, with an eye floating below it with a dark purple-blue eyelid.

Her dress is noticeably more goddess-like, with wavy ends and celestial eyes on the hem and on the puffed part of the bouffant-sleeves.

* Full Holy form

In this form, Sera becomes much larger and covered with white plumage and has an elongated neck with a jagged, draconic-like beak. Her three pairs of wings become larger, with one pair spread out, one pair wrapped around her body, and the third pair covering her feet's. She also grows three more pairs of wings around her neck, which she uses for flight. Seven blue eyes float around Sera's head, and her halo becomes larger.

Personality

Sera comes across as a kind, level-headed person who is caring toward those she interacts with and welcoming to even demons such as Charlie and Vaggie. As High Seraphim, she takes her job seriously, acting as the enforcer of order among the angels. This extends to her abiding civil behavior, as she seems upset when Charlie loudly curses in the court. She holds a preference for negotiation over violence when it comes to conflict, such as when she is willing to hear Charlie out on her plan to resolve the overpopulation crisis in Hell. Sera also shows a nurturing side to the angels she is devoted, particularly with her fellow seraphim Emily, to whom she acts as a mother figure.

Due to her peaceful nature, Sera greatly disapproves of Adam's juvenile and spiteful tendencies and the more violent and bloodthirsty of Exorcists, such as Lute. This is shown when Sera disapproves of Adam's declaration of targeting the Hazbin Hotel as the first area for him and his Exorcists to slaughter in the next Extermination. Sera deems his actions as uncalled-for and disapproves of Adam's delight and bloodthirst at doing so.

Despite her gentle nature, Sera's firm dedication to stability and willingness to do whatever it takes to protect Heaven from chaos leads her to perform controversial actions. This even motivated her to allow Adam's yearly Extermination. Her care for the other angels also factors into these decisions, fearing the same outcome that happened to Lucifer would happen to Emily and other angels if they questioned Heaven's methods, going as far as to protect Emily from the truth to ensure her happiness.

Although she was complicit, Sera does express regret and anguish when making such decisions, claiming that creating an Extermination to wipe out sinners yearly was a hard decision but was a required action. Furthermore, Sera herself showed numerous times that she greatly empathized with Charlie and her dreams of redeeming sinners, but ultimately considers it impossible to accomplish, and thus Sera does what she believes is best with what she thinks is possible. This shows that when it comes to upholding the peace, Sera will act by underhanded means to silence questioning the rules to ensure this, even if it goes against what she believes in or ignoring how other angels feel in the matter. This was shown later when Sera ultimately rejected Charlie's proposal to accept rehabilitated souls, even after acknowledging that the rules of redemption were unknown.

Furthermore, despite regretting allowing the Exterminations and her strong sense of responsibility to protect Heaven, Sera has also shown to be somewhat negligent or irresponsible in the direct handling of matters regarding the Extermination event she authorized and takes a passive approach by letting others handle it. This is repeatedly shown when she leaves almost everything regarding the Extermination to Adam and Lute, and does not get into the details of what exactly it is they are doing and largely leaves them to their own devices. This was also shown when Charlie travelled to Heaven to plead her cause to the Heavenly Court; in order to hide the Extermination from her fellow angels, Sera ordered Adam to do whatever he needed to do something to stop her, not bothering to handle it herself or get into the details of how he would do it. Her lack of control over her subordinates inevitably leads to Adam accidentally revealing the truth of the event to the rest of the members of the Court while spitting at Charlie, despite Sera warning him.

It is implied during the court trial in "Welcome to Heaven" that Sera does not believe it is possible for sinners to be redeemed and ascend into Heaven, and at the climax of the trial declared that there was not sufficient evidence to back up Charlie's case that sinners could be redeemed. Later, in "The Show Must Go On", when seeing Sir Pentious becoming an angel and being let into Heaven, Sera is visibly shocked. All of this is later shown in "Storyteller" during the trial of Sir Pentious after his ascension to Heaven, with Sera initially refusing to accept that redemption is possible, maintaining that souls can't change their fate, and choosing to believe that Sir Pentious forced his way into Heaven or St. Peter allowed him to pass the gate. However, after The Speaker of God confirms he was able to atone for his sins, becoming a cleansed soul, Sera finally accepts that it is possible for a soul to achieve redemption, and the revelation of the moment makes her feel so moved that she even shed a tear, and decides that Sir Pentious should remain under the care of Heaven.

Deeply regretting all the souls killed in the Exterminations, Sera later confesses to The Speaker that she feels she has sinned. Having believed she was leading Heaven's people righteously, now faced with the truth, Sera feels she hasn't been a good leader and has made the wrong decisions, knowing now that they could have saved souls, but acknowledges that after experiencing years of slaughter and terror, the sinners have a reason to fight back and take their pain out on Heaven. Her desperation to know what the next right course of action regarding how much of a threat Hell could be led her to take the drastic decision of isolating Heaven from other realms as a security protocol. It is also implied that being the leader and ruling over Heaven, having millions of souls under her charge, is starting to take a toll on her.

In "Storyteller", she seems to rely on other people making decisions for her and giving her instructions because of the stress and desperation of leading and protecting Heaven. This was the case when Adam pitched the Extermination to her and, believing it was for the good of her people despite it going against what Heaven was meant to stand for, allowed it. After realizing it wasn't the right choice, she asks The Speaker how she should atone, but she says Sera must speak with her own voice. Sera meets with St. Peter and Abel, requesting any suggestions and ideas, but, when neither of them had a helpful or reliable idea, she dismisses them and chooses to make the choice. In "Weapon of Mass Distraction," fear has also been a primary factor when she makes decisions. When she feared the safety of her people because of Hell's growing power, she allows the Exterminations, and she becomes scared once again when Vox used the Might of Lilith to destroy the barrier and the gate and then broadcasted to Heaven to give up the throne or face annihilation. However, after her duet with Sir Pentious, she has learned not to let fear guide her decisions any longer and she wants to have hope that Sinners can be redeemed despite their sins and their vile actions. This was evident when she allows Emily to go to Hell to try and stop the war peacefully while also having Abel and Lute get the Exorcist army ready in case they needed to resort to fighting.

During "Silenced" she got angry at Vox and the other sinners for not caring about their apologies about the extermination, even admitting that she allowed the event because of sinners like Vox wanting war. This act backfires on her as Vox uses it as proof that Heaven doesn't care about sinners and wanted to silence them permanently, and she returns to Heaven with the knowledge that her actions caused the very thing she hoped to avoid.

Throughout Season 2, Sera has repeatedly demonstrated that she'll resort to taking her Angelic form to intimidate whomever is challenging her for the sake of either establishing her authority or winning an argument, to the point of depending on it working just so she doesn't have to face the reality of her decisions.

In "Weapon of Mass Distraction," she didn't seem to understand human souls as much, such as their drive to sin and even questioned how they can be innately good enough to redeem themselves despite their willingness to make such vile actions. When Sir Pentious explained to her that humans are always afraid, she began to understand that they are like her, afraid and willing to make any decision to survive, sin or no sin.

In "Curtain Call", Sera has a brief moment of panic upon seeing Emily wounded by the Might of Lilith, almost sending the entire Exorcist army down to rescue her before Sir Pentious calms her down. This shows that Sera, while intent on redeeming her past mistakes, may still relapse into understandable fear when seeing her loved ones in danger. By the end of the episode, Sera is heartbroken at the sight of Emily's injury, then simply happy while seeing her sister flying through Heaven with her new prosthetic wing, still as joyful as ever.

Sera has also shown that despite her striving to retain her grace and composure, she is not above swearing, but only when she's alone and even then she curses under her breath.

Abilities

• Longevity - As told in "Overture", Sera has existed since before the creation of the Earth, meaning she is at least thousands of years old and presumably is unable to die of old age.

• Angelic power - Being the High Seraphim, she has incredible angelic power.

  • Barrier generation - While joining her fellow angels in "Storyteller", they were able to generate a holy energy barrier to protect the entirety of Heaven.

  • Portal-creation - As shown in "Silenced" and "Curtain Call", Sera can create portals between Heaven and Hell similar to Emily's except out of a golden liquid as opposed to a water-like substance.

  • Signal amplification - As shown in "Curtain Call", Sera helps to boost Sir Pentious' broadcasting device in Heaven to force the signal to transmit all the way to Hell by placing a hand on it.

• Angelic transformation - As shown in "Welcome to Heaven", Sera can transform from her standard angel form into a humanoid one. In "Silenced", she took on a much more abstract variation of her angel form, being even larger and more akin to biblical Seraphim.

  • Eye manifestation - While in her humanoid form, Sera can manifest and retract numerous glowing eyes across her body at will, including one large eye on her chest, one on each wing, one on each shoulder, one on each ringlet in her hair, and 5 on her halo.

• Creation - As told in "Overture", Sera was among the angels who expanded the universe.

• Flight - As an angel, she has wings that are capable of flight.

  • Levitation - Sera can always be seen levitating rather than walking.

  • Teleportation - Sera can teleport herself and others to any location she wishes by covering them with her glowing wings.

• Vocal amplification - As shown in "Storyteller", by touching her throat, Sera is able to amplify her voice to broadcast messages to all of Heaven. In "Weapon of Mass Distraction", her panic from Vox's threat against heaven causes her to emit an loud, echoing cry.

• Illumination - Sera can emit light from her body and wings at varying intensity, from an intimidating blue aura to a blinding flash of white.

  • Ocular illumination - Sera can make her many eyes glow at will, from bright blue to pure white at their highest intensity.

Skillset

• Musical talent - She is adept at singing.