Originally a Philistinian god worshipped in Ekron, Beelzebul was adopted through cultural osmosis as a major demon to the Abrahamic faiths. He is often called a "Prince of Demons" by the Hebrew faith, his name deriving from Ba'al Zebub, literally translating to "lord of the flies". To demonologists, Beelzebub is one of the Seven Princes of Hell, acting as the personification of the sin of gluttony and diametric opposite to Cassiel, Archangel of the virtue of temperance.
In modern popular culture, Beelzebub is arguably one of the most famously depicted demons in pop culture. Much like in the theology that he sprang from, pop culture often makes Beelzebub and Satan interchangeable, either having Beelzebub be an alternate name for the Devil himself, the closest thing to a Devil we see or one of Satan's most trusted (or least trusted) underlings.
As he is the Lord of Flies, he is often associated with bugs. Crawling, creeping, flying, biting little critters that spread disease and inject venom, with Beelzebub being portrayed either as a bug himself or some kind of Plaguemaster and Pest Controller.
- As Miss Beelzebub Likes: Beelzebub is portrayed as a former Seraphim that had been running Pandemonium (the series stand-in for Hell) after Lucifer's unexplained disappearance. While most demons look up to her for her skills as a capable and intelligent ruler, in private she is a ditzy airhead who rules only because it is her job and loves anything fluffy, her lifelong dream that of becoming one big ball of fluff.
- In Beelzebub, "Beelzebub" is the inherited name to a family of the Sin Lords of Gluttony, the youngest being Baby Beel (Kaiser de Emperana Beelzebub IV).
- Digimon: Beelzemon is an exceedingly powerful Mega-Level Digimon and one of the Seven Great Demon Lords.
- In Digimon Tamers, he is the digivolved form of Impmon, having been given a power-boost by Caturamon when he sees his lust for power. He then goes on a rampage, attacking friend and foe alike before Juri (whose digimon partner Leomon Beelzemon had just killed) tearfully begs Gallantmon not to kill him. This gives Beelzemon a Heel Realization, eventually siding with the Tamers against the D-Reaper's invasion of the real world.
- In Digimon Xros Wars, Beelzemon is the reincarnated form of Reapmon after sacrificing himself to save Shoutmon X4's life.
- In My Balls, Beelzebub is a Queen of Hell and close accomplice to fellow Queen Asmodai. She is portrayed as a beautiful woman who's breasts and genital area are covered in insectoid exoskeleton and has power over flies.
- Sandland: Beelzebub is the protagonist, and is portrayed as the troublemaker demon son of Lucifer.
- Seven Mortal Sins: Beelzebub is the Demon Lord of Gluttony, being the Token Mini-Moe, Token Wholesome and Token Good Teammate of the Demon Lords. She only got her position as the Lord of Gluttony because of her uncontrollable Horror Hunger, and even then she neither has control over it, nor does she have any real desire over the excess of it.
- "Beelze Frog" is a monster from the "Frog" archetype, portrayed as a black and red frog with little demon wings. He only has 1200 Attack Points, but gains 300 ATK for each "T.A.D.P.O.L.E." in its player's graveyard.
- "Beelze of the Diabolic Dragons" is a Dragon-Type Synchro-monster from the "Archfiend" and "Duel Dragon" Archetypes. In Yu-Gi-Oh! 5D's, it is used by Sect in his Insect/Hell-themed deck, furthering the parallel to the Biblical demon it is based off of.
- Asterix: In Asterix and the Soothsayer, Vitalstatistix the druid mentions Ba'al Zebub during a storm when all the other Gauls are cowering over it calling out for their gods' protection. Obelix then asks Asterix if he knows that god, which he replies that it must be an obscure foreign god.
- In Black Moon Chronicles, Beelzebub is a morbidly obese demon made up of thousands of flies. He immediately usurps the throne of hell when he realizes Lucifer is gone and declares war on the remnants of humanity.
- In the DC Universe, Beelzebub becomes of the three co-rulers of Hell alongside Lucifer Morningstar and Azazel after an infernal civil war occured after the Great Darkness was defeated in Hellblazer. Even after Lucifer abdicates his throne, Beelzebub keeps this role, often staying out of the way whenever some type of cosmic or political conflict involves Hell.
- God Is Dead portrays Beelzebub as a member of a group of Middle-Eastern demons and Underworld Gods aligned with Satan, him being a massive obese creature with flies swarming around him.
- The Marvel Universe has a very complicated representation of devil characters and the realms of Hell due to plenty of Continuity Snarl. Both Beelzebub and Beelzeboul are presented as separate characters who both claim to be Satan (ALL of the Hell Lords claim to be Satan to induce fear in mortals, since nobody is sure if there ever existed an actual Satan itself). Beelzebub looks like your standard Big Red Devil, not unlike Chernabog from Fantasia, while Beelzeboul is a more subdued humanoid appearance with red skin. It's confirmed that Beelzeboul was one of Lucifer's lieutenants when he rebelled against God in the Christian Mythos, but it's only rumored that Beelzebub was also one of his lieutenants. Beelzebub and Beelzeboul may or may not also be the same character. There's no concrete proof that they're two different characters, but not enough to say they're the same either.
- The Omega Code: Just as Stone Alexander transforms into his true form in Megiddo: The Omega Code 2, he addresses himself through his various alternate names, including Satan, Lucifer and Beelzebub.
- In Tenacious D in The Pick of Destiny, Jack calls Satan "Beelzeboss" when he and Kyle sing their song during their rock-off. Satan looks more confused by it if nothing else. "Beelzeboss" is the name of the song Satan, JB and KG sing in the climax of the film.
- Flies, by Isaac Asimov, plays with the name's translation. The protagonist is a man developing a super-advanced method of studying the emotions of animals from physical cues. An associate of his seems to be plagued by flies, constantly having one or two buzzing around him; the protagonist isn't sure what to think of him, in that he can read the flies' movement and can tell that they are following the other man with reverence — as if he were literally a "lord of the flies".
- Good Omens: After Adam cancels the Apocalypse , both the Metatron and Beelzebub appear to them to represent Heaven and Hell respectively in order to talk Adam into changing his mind and restarting the Apocalypse.
- Lord of the Flies: The titular entity, a decomposing pig's head on a stick, is supposed to be an allegory for Satan. This contrasts with Simon, who is supposed to be an allegory for Jesus. It's worth mentioning that "lord of the flies" is a literal translation of "Beelzebub" from 2 Kings 1:23, 6, 16.
- Paradise Lost: Beelzebub appears as the close friend of and The Dragon to Satan, although he fades out of prominence after the start of the epic, as the narration follows Satan on his journey to Earth.
- In The Salvation War Beelzebub appears as one of Grand Dukes of Hell, with hundreds of thousands of 'flies' (firebreathing harpies) under his command. His attack gives the most trouble to the Human Expeditionary Army... which is still a relative term.
- Good Omens (2019): Beelzebub is given a much more prominent appearance in the series than in the original novel, acting as the highest authority in Hell below Satan himself. She is portrayed as looking like an Impoverished Patrician riddled with bug bites, with a prominent and borderline necrotic blemish on her right cheek and followed around by a halo of swarming insects. When she appears on Earth, she appears much more healthy, her body lacking the bites, her clothes much more refined and wearing a large fly on her head as a hat. When she is angry, her voice buzzes like the wings of a fly.
Crowley: [takes a bow] Lord Beelzebub. What an honor.
Beelzebub: Crowley. The traitor.
Crowley: That's not a nice word.
Beelzebub: All the other words I have for you are worse.
- Lucifer (2016): In "#TeamLucifer", Beelzebub is referred to by the Satanic Priest as one of the Four Crowned Princes of Hell. Lucifer finds it annoying since there is only one "him", implying that he does not identify "Beelzebub" as one of his names, nor is there actually an entity named "Beelzebub" anywhere.
- Queen: In "Bohemian Rhapsody", the lyrics say that "Beelzebub has a devil put aside for me", hinting that Beelzebub chooses which demon is assigned to what person.
- Dungeons & Dragons: Baalzebul has been the Lord of the Seventh layer of Hell since 1st Edition. After a failed rebellion against his master Asmodeus, he was left in command of his territory but was cursed into a loathsome sluglike form, an insult for which he continues to plot revenge.
- Pathfinder: Baalzebul, the Lord of the Seventh layer of Hell, is a Fallen Angel who joined Asmodeus in his rebellion against Heaven. When he demanded extra power, Asmodeus transformed him into a Hive Minded swarm of flies. He continues to serve Hell's interests, manifesting as a huge angelic figure of flies, a gigantic fly, or a single small fly that whispers corruption to mortals.
- Body Harvest: Beelzebub is the name of one of the alien bosses, appears as a giant floating bug somewhat resembling a demon fly from hell and fires motion wave beams at the player.
- Castlevania: Beelzebub (alternatively called Beezelbub) is a recurring boss, being an undead demon that makes his first appearance in Symphony of the Night and Harmony of Despair as a giant rotting corpse suspended by hooks and chains, surrounded by hideous flies that closely resemble the page image.
- Darksiders III: Despite there existing a demon named Gluttony, Sloth bares a stronger resemblance to the Lord of the Flies. He's one of of the Seven Deadly Sins, a group of demons made by the Creator as a Necessary Evil that were so powerful that they were imprisoned by the Charred Council as a precaution but which escaped to Earth after the Apocalypse was started prematurely. Sloth takes the form of a giant, obese locust-like creature who sits on a throne of filth and has his locust slaves do everything for him. His title — "Lord of the Flies" — implies the comparison was deliberate.
- Final Fantasy II: An optional boss named Beelzebub appears as a Chest Monster in Pandaemonium. He looks like a giant blue fly wearing a cape. A Palette Swap called Beelzebub Soul appears in Soul of Rebirth in the corresponding part of its final dungeon.
- God Hand: One of the villains is a demon named Belze. He appears human at first, but his true form is that of a demonic fly.
- La-Mulana: Beelzebub appears as a vampire-like figure and the miniboss of the Shrine of the Mother. While he won't attack you when it is the normal Shrine of the Mother (and trying to attack him simply makes him break apart into insects and reform) and you can simply carry on to the next room, when the place transforms into the True Shrine of the Mother, he will close the exit and fight you when you enter his room. He also transforms into a giant fly when he Turns Red in said battle.
- Patapon: In Patapon 3, Gluttonous Buzzcrave bears a resemblance to Beelzebub due to being linked to the Archfiend of Restraint, representing the Deadly Sin of Gluttony, and he wears a purple bug-like mask with yellow fly like eyes. He usually talks about devouring his foes and also talks about eating a couple more of Zaknels and chewing on a Cyclops. He is never seen eating anything in-game though.
- Puzzle & Dragons: Beelzebub appears as one of the Descended Dungeon monsters, and the gem of his Ultimate Evolution is component to a few other evolutions. His portraits have him riding a motorcycle shaped fly.
- Shin Megami Tensei: Beelzebub is a recurring demon/persona. He has had two designs: one is an anthropomorphic fly based on the image of the demon in the Dictionnaire Infernal while another is a blue man with veins and a tigerskin. He is the powerful Tyrant demon that serves as the second-in-command of Lucifer. In the Persona series, he is usually the ultimate Persona of The Devil tarot arcana, which is unlocked upon completing the Devil social link.
- Monster Girl Encyclopedia: Beelzebubs are A Kind of One Fly/Bug type of Cute Monster Girl from the Demon Realm. They are omnivorous with a particular liking to human body fluids (which they will often get through sexual intercourse) and are routinely called the "Lord of Gluttony" of the monster world for their ravenous appetites.
- The Devil and Daniel Mouse: Jan's scarily strange manager goes by B.L. Zebubb.
- Jimmy Two-Shoes: Beezy is meant to be an Expy of Beelzebub. His father is Lucius, who is supposed to be Lucifer.
- Futurama: In "Hell is Other Robots", Leela sarcastically calls the Robot Devil "Beelzebot". In a later episode, when the Robot Devil makes a suitably unsubtle entrance, Bender greets him lackadaisically with "Hey, Beelzy."