LoRA Model of Queen Beelzebub, one of the Seven Deadly Sins from the "Helluva Boss" indie animated series by Vivziepop.

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 it possibly stems from his table manners rather than his eating habits.