Birthday

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Birthday
誕生日 (tanjōbi)
English Name(s)	Birthday

A birthday is an observation of the date that an individual was physically born into the world or existence, which may include a party of other kind of celebration.

While a good number of Dragon Ball characters have birth years that are confirmed across a variety of media, very few specific birth dates are ever confirmed, and what few that have been stated are all done external to the series itself, effectively/exclusively through a spotlight column in a single 1986 issue of Weekly Shōnen Jump.

Numerous birthdays are also erroneously celebrated by fans, and sometimes even by the official rights holders.

Known Birth Dates

The 1986 No. 37 issue of Shueisha's Weekly Shōnen Jump contains a sealed "1986 Jump All Characters Catalog" with biographical data on 148 different characters across the various franchises published within the magazine. Ten Dragon Ball characters are detailed, with eight given actual birth days (those without are Son Goku and the Turtle Hermit).

• 
  Photograph of the first inside page from the 1986 No. 37 issue of Weekly Shōnen Jump with the character catalog
• 
  Photograph of an interior section that has not been torn open from the 1986 No. 37 issue of Weekly Shōnen Jump

Character	Date	Source
Yamcha	March 20	Weekly Shōnen Jump, 1986 #37: Character Biography Data
Ox Demon King	May 6	Weekly Shōnen Jump, 1986 #37: Character Biography Data
Lunch	June 17	Weekly Shōnen Jump, 1986 #37: Character Biography Data
Bulma	August 18	Weekly Shōnen Jump, 1986 #37: Character Biography Data
Pu'er	September 2	Weekly Shōnen Jump, 1986 #37: Character Biography Data
Oolong	September 23	Weekly Shōnen Jump, 1986 #37: Character Biography Data
Kuririn	October 29	Weekly Shōnen Jump, 1986 #37: Character Biography Data
Chi-Chi	November 5	Weekly Shōnen Jump, 1986 #37: Character Biography Data

Traditional Birthdays Seen or Acknowledged in Media

These examples include normal/traditional birthday celebrations or citations for human (or human-like) characters in the Dragon Ball franchise.

Imagery	Character	Source	Notes
	Umigame	Dragon Ball Z episode 117	The sea turtle's 1,000th birthday is celebrated, which Kuririn mistakes as having something to do with him and Maron potentially getting married.
	Son Gohan	Dragon Ball Z episode 171	Chi-Chi suggests they celebrate Gohan's birthday, since his most recent one would have been missed with him spending time training in the Room of Spirit and Time with his father (even if this means they do not celebrate it on his actual birthday itself).
	Bulma	Dragon Ball Z: Battle of Gods + Dragon Ball Super Adaptations	In each version of the Battle of Gods story arc (original 2013 theatrical film, 2015 Dragon Ball Super manga, and 2015 Dragon Ball Super television series), Bulma's birthday party being the impetus for everyone getting together remains the underlying plot point, even if the circumstances and locations change from adaptation to adaptation.
	(unknown)	Dragon Ball Super episode 87	A poacher boss does not actually have a self-destruct mechanism in his body, and when he finally does push the switch, only confetti pops out — he was planning to hold a surprise birthday party later on.
	Bra	Dragon Ball Super episode 83 and episode 93	In order to accommodate Vegeta's need to be there for the birth of his next child, Whis magically removes Bra from the womb right into Bulma's hands. Later on, when Trunks sees the visuals of several Tournament of Power teammates, Bulma lies and says it's a list of people coming to celebrate the birth of Bra.
	Trunks	Dragon Ball Daima episode 1	Trunks's ninth birthday is celebrated.
	Yamcha	The Case of Being Reincarnated as Yamcha	Yamcha's birthday is known and cited by the super-fan main character.
	Goku	Dragon Ball Evolution	Grandpa Gohan celebrates Goku's 18th birthday by giving him the four-star Dragon Ball.

Unconventional Creation "Birthdays" Seen in Media

These examples include the creation of unconventional, non-standard "human" characters through other means of reproduction or growth.

Imagery	Character	Source	Notes
	Cymbal	Dragon Ball chapter 137 / episode 104	Demon King Piccolo coughs an egg spawn to go collect the Dragon Balls, this one named Cymbal.
	Drum	Dragon Ball chapter 153 / episode 118	Instead of dirtying his own hands, Demon King Piccolo coughs up another egg spawn to fight Tenshinhan, this one named Drum.
	Piccolo Jr.	Dragon Ball chapter 161 / episode 122	After Son Goku flies through him, but before exploding, Demon King Piccolo spits out one final egg spawn: his reincarnation/clone/son. Due to the timing of the 22nd Tenka'ichi Budōkai on May 7 and Demon King Piccolo declaring May 9 to be "Piccolo Day," we can pretty concretely presume that this "birthday" takes place on May 9.
	Saibaimen	Dragon Ball chapter 214 / Z episode 22	Nappa plants six seeds in the ground, which grow and emerge as the ferocious Saibaimen.
	Cell Jrs.	Dragon Ball chapter 406 / Z episode 183	In order to push Son Gohan to his limit (and torment the other characters), Cell spits out seven "Cell Jrs." from his tail, which go on to fight everyone else as Gohan watches. After transforming up to Super Saiyan 2, Gohan kills them all... until they regenerate and hang out on Monster Island.
	Koo	Dragon Ball Daima episode 9	Marba gives Arinsu one Saibaiman seed to plant; just about five centimeters down will give them enough Boo presence but still be able to control the result. The seed is planted and watered, and the cauldron explodes with green energy. By using a Saibaiman as the base and various monsters in the mix as well, with this essence of Boo to create it, he is "Majin Koo"...!
	Doo	Dragon Ball Daima episode 11	Back at it again, Marba pours her cauldron into the pot, and has Arinsu add her saliva once more. Koo digs and measures the hole for the seed, then buries and waters it. Everyone steps back as the concoction begins to erupt. Marba names this one "Majin Doo"...!

Alternate Literary or Metaphorical Meaning

Splash text at the bottom of chapter 503's original serialization notes "Gogeta" as appearing next chapter

The Japanese word 誕生 (tanjō) meaning the "birth" or "creation" of someone or something can also be used in a flowery sense of "coming forth" or "appearing" or even simply "being formed":

• This meaning is used twice in chapter titles for the original Dragon Ball manga series, once for chapter 304 ("Birth of a Super Saiyan and a Super Freeza?!") and again for chapter 423 ("The Birth of a New Hero!!")
• This meaning is used once in a chapter title for the Dragon Ball Super manga, with chapter 88 ("The Birth of Super Heroes")
• This meaning is used five times in the Dragon Ball Z television series, with episode 77 ("Birth of the Mightiest Warrior?! Nail and Piccolo Merge"), episode 141 ("To Face an Unprecedented Foe... A Super Namekian is Born!!"), episode 145 ("The Secret of Cell's Birth! What Lies Below the Laboratory?!"), episode 160 ("An Infinite Battle Power!! The Birth of the God of Destruction is Named Cell"), and episode 251 ("The Birth of a Superhuman Warrior!! His Name is Gotenks")
• This meaning is used twice in the Dragon Ball Super television series, with episode 9 ("Sorry About the Wait, Beerus-sama — Finally, Super Saiyan God is Born!") and episode 17 ("Pan is Born! And Goku Goes Off on a Training Journey?!"), with a slightly different variation earlier in the series with episode 6 used in reference to a birthday party ("Don't Anger the God of Destruction! The Heart Pounding Birthday Party")
• This meaning is used four times in the Super Dragon Ball Heroes Promotional Anime, with episode 17 ("The Ultimate Godslayer! Hearts is Born!"), episode 29 ("Evil Resurrected: Dark King Fu is Born!"), episode 31 ("Universal Creation at an End – A Brand New World Is Born!"), and episode 38 ("Threat of the Obstructing Fu! The Birth of the Miraculous, Strongest Combination!")

This kind of phrasing is used elsewhere throughout the franchise and its marketing — a particularly notable example is preview text at the bottom of Dragon Ball manga chapter 503, which states, "Next Time: Gogeta is Born / Comes Forth / Appears!" (次回『ゴジータ誕生』).

Erroneous Birthday Celebrations

Son Gohan's "Personal Data" box from the Super Exciting Guide: Character Volume, with only a year listed

• Goku: Thanks to a user named "CapitaoApocalipt2005" (likely intentionally) adding incorrect information into a Wikia/Fandom article in July 2017, people who don't fact-check anything keep referring to "April 16th" as Goku's birthday. It's not. It's spread like wildfire ever since. We have a whole article about it.
• Gohan: Thanks to various people adding incorrect "Super Exciting Guide" citations into Wikia/Fandom articles (but never exactly which of the two "Super Exciting Guide" volumes, nevermind a page number on top of that), people who don't fact-check anything keep referring to "May 18th" as Gohan's birthday. It's not. None of the character profile boxes in the Super Exciting Guide: Character Volume list anything other than the year ("Age") in which the characters were born.
• Trunks: Not sure of the original source for any of these, but it's probably more of the same: people adding incorrect information into a Wikia/Fandom articles. Trunks does not have a stated birthday anywhere, and so it's definitely neither November 21 (even Bandai Namco got scammed on this at least once) or June 1 (which a terrible article from the terrible website Comic Book Resources lists without any citation, alongside a bunch of other complete fabrications).