Summary
(Beelzebub is a tall and slim fox-like demon with shapely hips, digitigrade legs, and insect-like features - such as two pairs of arms, a pair of antennae attached to her ears, and a small pair of insect wings which are light yellow with pink outlines. Her long hair and tail appear to be made of lava lamp fluid colored in bright pink, aqua-blue, and orange, with her waist also resembling a lava lamp. Atop her head is a pink, black, and white tuft resembling a small, flame-like crown. Her fur is light yellow with dark fuchsia stripes and small markings located on her ears, the sides of her face, and between her eyes respectively, with white from her upper torso up to her muzzle with a small black nose. She also has a dark fuchsia stripe on her head, which is shaped like a small heart. Her eyes have very pale yellow sclera and hot pink pupils, as well as faded light maroon upper eyelids and thick eyelashes with two protruding that resemble antennae. She also has black, dripping-like markings from her eyes, and over her four arms and digitigrade legs, resembling long fingerless gloves and thigh-high stockings. Beelzebub wears a black choker around her neck, a low-cut black bra under a small and sleeveless, off-the-shoulder pink crop-top with lighter markings below the heart-shaped cutout, and a set of light pink shorts with the trim being the same color as her top.) (Personality Beelzebub presents herself as a highly extroverted and energetic party girl, as she has proven to be optimistic, cheerful, and loud, yet welcoming when it comes to hosting her own parties. With her lively attitude, she keeps a bright environment for her guests, allowing them to heavily indulge in food and alcohol, such as her Beelzejuice. Despite being one of the Seven Deadly Sins, she is arguably laid-back and is comfortable to strike up a conversation to a new face. She can be rather expressive as she is the "Too much information" type-person, as when Vortex introduced her to Loona for the first time, she talks about having a "rainbow in her vagina" and her past experience with encountering Satan being shirtless. Because of her extroverted and carefree nature, Beelzebub—unlike most of her fellow Sins—is also rather sympathetic toward low-class demons such as imps and hellhounds, even involving herself romantically with one. She can be found advocating for Blitzo in the episode “Mastermind,” calling him a “total wildcard.” She is also shown to be competitive when challenging Blitzo to a drinking contest, but shows respect to him when losing. She has shown to care about others' well-being and also concern for her guests, and does not like it when they indulge for self destructive reasons, being genuinely concerned for Blitzo who was going self destructive after having a fall out with Stolas, getting drunk and having intercourse with many of her guests. Beelzebub also doesn't like it when people make snide or unkind comments about her, such as when she asked Loona to go check on Blitzo, and the former insults her under her breath. She is also not afraid to show dominance, as she uses her Full Demon form to intimidate Loona and warned her to "not fuck with her". This is showed again when Mammon criticized her and Asmodeus for "enjoying slummin' it with the lower class plebs" and told her to "buzz on back to [her] mutt". However, she can be apologetic for using her full powers for petty reasons, such as when she apologized to Vortex for almost starting a fight with his friend. Contrary to her sin, when Mammon got out his lunch and started messily eating, she was disgusted by his behavior, though this could possibly stem from his table manners rather than his eating habits.)
Beezlebub's full demon form is similar to her normal form, but with the exception of her being larger in size, and her fur and hair having a color scheme of different shades of yellow. In addition, her eyes have red sclera and multiple white pupils, and the stripe on her head opens up into a third eye which has a red sclera and a slit white pupil, surrounded by a black-and-white crown-like pattern. The color of her clothing changes to a color scheme of red-and-black.
At first, Beelzebub was having fun taking Blitz on in a drinking contest. Since he beat her in the contest, Beelzebub has since developed a respect for the imp. However, she became concerned when Blitzo started overindulging on alcohol and causing problems at her party. She later hoped that Blitzo and Loona would be able to sort things out. In "Mastermind", she defended Blitzo during the trial for using Stolas' grimoire illegally and mentioned how she was impressed with him after the party, being supported by Asmodeus and together they voted for a fair trial for Blitzo, which was denied by the vast majority of the demons gathered.
Upon meeting Loona, Beelzebub immediately developed a liking of her and declared her she was her "new favorite person" albeit she also stated Loona was "freaky". When Beelzebub and Vortex tried telling Loona about Blitzo's behavior at the party the two offended each other and nearly started a fight until Loona, not wanting to endanger her friendship with Vortex, relented and went to check on Blitzo. When Loona was out of sight, Beelzebub apologized to Vortex and voiced her concerns about Blitzo and Loona, hoping everything worked out for them.
As seen in "Mastermind", Beelzebub is shown with somewhat of a longing look when looking at Lucifer's empty throne, implying that she misses him or at least prefers having him leading Hell instead of Satan. As shown in "New Pentious", Lucifer keeps multiple pictures of Beelzebub in his room at the Hazbin Hotel, showing a presumed fondness for his fellow Sin. In "Silenced", Lucifer has received a bag of candy from Beelzebub alongside gifts from other Sins and Mammon's bribe for him to come back.
As seen in "Mastermind", Beelzebub is showed having a tremendous dislike for Mammon who replies in kind, criticizing her for enjoying spending time with the lower-class demons. Also, despite being the embodiment of Gluttony, she is visibly disgusted by how he eats. Although, this could possibly stem from his table manners rather than his eating habits.
Beelzebub has a close and friendly relationship with Asmodeus as shown by the picture of the pair kept on Asmodeus' fridge in his tower in the episode "Oops". In "Mastermind", she and Asmodeus are shown budding together in defense of Blitzo when he is being judged for breaking the law, due to both having sympathy for the lower class demons and even being romantically involved with them. Not just that, but they also are showed as having the same dislike for Mammon.
During her conversation with Loona, Beelzebub implied to have a close relationship with Belphegor, even referring to her with the affectionate nickname "Bel". Beelzebub apparently has the habit of stealing "party drugs" from Belphegor to use in her parties, enough that Belphegor has placed additional security by changing the locks on her cache of medicines and pills to stop Beelzebub from taking any more. Later, after she failed to steal some of her drugs, Belphegor called Beelzebub a "jackass" for trying, but Beelzebub herself was unaffected by her insults and instead takes it in stride.
During her conversation with Loona, Beelzebub stated that she sees Satan as a brother figure. However, she also admitted to being attracted to him, having contemplated and stating that she could "hit that" when remembering the time she saw him shirtless for the first time. In "Mastermind", she is shown to know that he is a liar, as the latter boasts of being the undisputed authority in Hell and its original ruler, although Beelzebub knows that Lucifer has always been the true ruler of Hell, and is above Satan in terms of status and power, though, it is still implied that Beelzebub acknowledges Satan's authority.
Beelzebub is shown to be an exceptional performer, going so far as to use her talents to host lavish parties for imps and hellhounds, where she is the entertainment.
Beelzebub is able to sing while in liquid such as honey, and thus, presumably is able to breathe while submerged.
Beelzebub has shown throughout her song in "Queen Bee", and her appearances in "Mastermind" and "Mission: It's Chaz Funeral", that she is able to change the color of her regular hair, lava lamp hair, tail, and belly, and the entirety of her body.
Beelzebub's digestive system is constantly burning what she consumes, keeping her constantly indulging.
Beelzebub's hair and tail, which is made of a honey or lava lamp based substance, is constantly seen moving, and seems to be manipulated at her will as it is capable of grabbing others, as seen when she used her tail to throw a hellhound into a giant punch bowl in "Queen Bee".
Beelzebub can manipulate a honey-like substance freely, levitating, moving, expanding, and shrinking it.
Beelzebub is shown enlarging various types of food, including tacos and alcoholic drinks, including their container, and also appears as different sizes herself.
Beelzebub can detect everyone’s sense of taste within her vicinity and can become energized off it. But she can also pick up on bad vibes from troubled individuals, such as when Blitzo is making out with other imps while battling the need to puke.
Beelzebub is shown to be able to materialize items, namely confectionery like cotton candy, from seemingly nothing. This also seems to include non-tangible things, such as rainbows.
Beelzebub possesses small, insect-like wings which allow her to fly.
As a Deadly Sin, Beelzebub is presumably immortal and only able to be killed by angelic weaponry.