Celestia Ludenberg (セレスティア・ルーデンベルク Seresutia Rūdenberuku), real name Taeko Yasuhiro (安広多恵子 Yasuhiro Taeko), is one of the characters featured in Dangan Ronpa: Academy of Hope and High School Students of Despair. She has the titleSuper High-School Level Gambler (超高校級の「ギャンブラー」Chō Kōkō Kyū no "Gyanburā") She was a renowned gambler who managed to rob everyone of all their money whenever she played a game with them. Due to her nature, she was given the title "Queen of Liars". In the third trial, she was found out as the culprit and executed by Monobear.
Celestia has a slim figure and pale skin. She has black hair (in the video it is shown as dark deep blue) in two large twin-drill pigtails (which are apparently clip-ons as mentioned in the art book), red eyes, gold earrings, and black nail polish. Celestia wears gothic lolitastyle clothing with a black and white dress with a fitted long sleeve wind breaker, thigh highs with white laces at the top, a white bonnet with ribbons on the sides, a red tie and high pumps with buckle straps (which resembles a maid outfit but is more unique and stylish). It should be noted that she wears a silver colored, metal finger stall on her index finger, on her right hand.
An experienced gambler, Celestia appears collected and cunning by nature. She possesses the ability to manipulate others into her bidding and can lie with a straight face. She makes use of these abilities by trickingYamada into killing Ishimaru and deceiving the other students for the most part of Chapter 3.
Celestia is shown to be fairly intelligent, referencing several aspects of game theory such as Prisoner's Dilemma or Zero Sum Game, but her short-temperedness surfaces when something fails to go as well as she expects it to.
Little is known about Celestia's life prior to being trapped within Hope's Peak Academy. However, from Naegi's interactions with her during Free Time periods, one can discover that Celestia has been gambling for the most part of her life, and that she has not heard the term "lose" for a long while. She tells how she has won countless games, even ones at the stake of her own life, but was able to win regardless. Celes also reveals that she used to visit a cafe (with an owner that somewhat resembled Yamada), where she would enjoy her preferred royal milk tea.
Much like the other students, Celestia awakens to find herself trapped inside the school grounds, to her annoyance. She appears to adapt quickly to the new conditions, claiming that it is the only way to survive, and suggests the others do the same.
When Monobear introduces the first "motive" to each of the students through individualized footage on CDs, Celestia is horrified at what her CD shows (but refuses to say what exactly she saw, which is never revealed). She aids the students in solving the first case after the deaths of Maizono and Ikusaba (disguised as Enoshima).
Celestia plays a key part in Chapter 2, having encountered Fujisaki in the storage room prior the latter's death. During this encounter, Celestia notices Fujisaki's blue jersey partially hanging out from his bag, which he then stuffs back inside before going off in a hurry. This later proves to be a major factor in figuring out who murdered Fujisaki.
After Oowada's execution, Celestia is among the students who witness Monobear present a ton of cash (10 billion yen) for whoever "graduates" from the academy. Succumbed to her own greed, Celes plans to commit a murder herself so she can get these cash just to escape the nightmare while ignoring her own comrade's survival. To initiate her plan, Celes takes Alter Ego, the AI developed by Fujisaki before his death, and hides it to cause confusion and upsets both Yamada and Ishimaru. Using their conflict for Alter Ego as her first step of her plan, Celes enlists Yamada as her accomplice (and tells him that she will act as his) by saying that Ishimaru took Alter Ego, and that he plans to kill him (Yamada). Yamada believes her and the two begin to conspire. They frame Hagakure by knocking him out and stuffing him into a robot suit. Celestia organizes Yamada's "death" after Ishimaru is killed, managing to trick the others into looking for the suspicious person wearing a robot suit. After Yamada relocates himself and Ishimaru's body to the Art Room, Celestia turns against him and kills him, as she planned to do from the beginning.
During the school trial, Celestia urges the students to declare Hagakure (Yamada's last clue before his real death) as the culprit to both murder since the robot costume matched his height. However, Togami,Naegi, and Kirigiri see past her lies and manage to prove Hagakure's innocence. Even with evidence having her cornered, Celes refuses to admit (changes her polite personality into her unusual rude mannerism), and would repeatedly deny Naegi's question over her real name and kept claiming that Hagakure is the culprit of the third trial, since she never revealed her real name since their first encounter. In the end however, her last stand is proven futile as Naegi mentions her ElectroID (real name displayed in every student's ID) and would let her guard down and that evidence alone would lead to her downfall. As she finally goes to the gallows and Monokuma reveals her real name as Taeko Yasuhiro, Celes finally tells them and admits to her crimes before facing her execution, stating that she wants to go out "gracefully". She gives Kirigiri the key to the locker Alter Ego is stashed in, bidding her classmates farewell and having Monobear drag her off to her execution afterwards.
- Main Article: Versailles style Witch Hunt Stake
Yamada and Celestia's relationship consisted primarily of her bossing him around.
A prime example of this is when Yamada make Celes tea but she refuses the tea, and telling him that she only drinks a certain milk tea.