Allusions

This is a list of allusions to pop culture found throughout Beelzebub.

Dragon Ball

 * Chapter 91: Oga nicknames the Teimō Shadow group as the Four Krillin Brothers.
 * Chapter 91: Ittōsai's first lesson for Oga, Kunieda and the Teimō Shadow group involved stones. Oga initally thinks they will be trained like how Master Roshi trained Goku and Krillin, by throwing stones out into the water and finding them again.

Gintama

 * Episode 36: In the next episode preview, Oga mistakes Zen-san for three different characters. One of these characters is a "jack-of-all-trades man from the Yorozuya". Tōjō points that he is mistaking him for Gin-san, or Gintoki Sakata.

Maria-sama ga Miteru

 * Episode 51: The episode title is based off the name of the series. The Taniyurikai girls gang seen within the episode is based off the student officer organization Yamayurikai. The three known members of the Taniyurikai are also based off their respective characters in the Yamayurikai's Rosa Foetida Family, even sharing their names. Both the characters in Maria-sama ga Miteru and the Taniyurikai were also voiced by the same three voice actresses. In the Taniyurikai, Torii even proclaims that "Maria-sama is watching [them]".

One Piece

 * Chapter 139: Re-introducing herself to Hilda, Oga's Mother referred to herself as Big Mom.

Psyren

 * Chapter 69: In the Saint Ishiyama Festival, a student dressed up as Ageha Yoshina in front of a "Psychic Test" booth kneels to two other students dressed up as Kyle and Frederica.

Sket Dance

 * Chapter 69: In the Saint Ishiyama Festival, two students dressed up as Yūsuke Fujisaki (Bossun) and Kazuyoshi Usui (Switch) advertise a "Sket" Dance Heaven event.

Video Games

 * Furuichi owns a PS2, albeit known as a PlayStephany 2 rather than a PlayStation 2. He also owns a game known as Biohusband 4, a parody of Resident Evil 4, otherwise known as Biohazard 4 in Japan.
 * En owns a Mega _rive (Sega Genesis) and a Super Fa__com (SNES)

Dragon Quest

 * Chapter 1: When Oga tries to decide what to do with Beelzebub upon first meeting him, he contemplates his options in the format of a game menu.
 * Chapter 12: After Hilda destroys Oga's video game console, Oga demands his Mildrath, Deathtamoor and Orgodemir back.
 * Chapter 22: After Furuichi manipulates Beelzebub to electrocute everyone in the pool, including Oga and Takashima's gang, Furuichi evilly declares a Gigadean attack.

Hammerin' Harry

 * Episode 36: In the next episode preview, Oga mistakes Zen-san for three different characters. One of these characters is a "carpenter". Tōjō points that he is mistaking him for Gen-san, or Genzō Tamura.

Monster Hunter

 * Chapter 135: When Quetzalcoatl introduces Oga to his set of games, Oga asks if one of them is Monster Hunter.

Folklore/Literature

 * Long Novel: The long novel is based on the well-known Chinese novel Journey to the West, known as Saiyūki in Japanese. An extra chapter is a short preview of the long novel, while episode 49 is an adaptation.

Miscellaneous

 * En's favorite soda is Calpis.
 * Episode 4: Natsume mentions a brand of diapers having been sold out in his store after becoming popular on Chirper, a parody of Twitter.
 * Episode 11: A sign of can be seen in the background. This bank is a parody of.
 * Episode 11: Himekawa owns a cell phone with an interface replicating an Apple iPhone and a grape logo on the back.
 * Episode 18: Furuichi attempted working at a Starbugs coffee shop to woo himself some girls, a parody of Starbucks.
 * Episode 25: Tojo asked kazuya about a burger shop called Jabdonald, a parody of Mcdonald.
 * Episode 36: In the next episode preview, Oga mistakes Zen-san for three different characters. One of these characters is an "awkward person". Tōjō points that he is mistaking him for Ken-san, or Ken Takakura, and that the children watching the show probably wouldn't know who he is.