Celestia Ludenberg

Celestia Ludenberg is a character from first Dangan Ronpa game. She starts out as a supporting character in earlier chapters, but on the third chapter, revealed to be a villain that has to be brought down. Her title is 'Super High School Level Gambler' and she is also known as 'Queen of Liars'. Everyone else calls her 'Celes'. She is voiced by Hekiru Shiina.

Personality
Celes presents herself as a cunning, collected girl who is mostly pragmatic. She is able to manipulate people on her whims, and with such bluffing skills, she managed to win a lot of money in the underground gambling world, for a dream of 'living in a castle surrounded with handsome servants dressing like vampires'. She is also ruthless to a degree and has no regards to human lives, if they would serve as pawns to be manipulated and disposed for her sake, so be it. She tends to categorize people with 'rankings', with ranking 'D' being mostly everyone, 'F' being the lowest and would make her send assassins to kill such people. In the game, by going through her Free Time events, only the protagonist Makoto Naegi managed to reach rank 'C', and for Celes, that's about as equal as 'being her Knight/bodyguard'.

Celes is capable of hiding her surprisingly short temper. If her patience was pushed, she'd drop her calm and cunning facade and started screaming angrily.

Pre-Despair Incident
Celes was born in a rural country as a plain girl named Taeko Yasuhiro. She took a liking of the normal food gyoza and can't hide the fact that she liked the food. Once she later discovered her talents in gambling and lying, she took the stage persona 'Celestia Ludenberg' and becomes involved in many underground gambling joint, embracing the ruthless persona wholeheartedly. The manga of Dangan Ronpa seemed to imply that this was because as the plain Taeko Yasuhiro, she was suffering of being ignored and unloved for her plainness.

She attended to Hope Peak's Academy and eventually agreed to stay in the school per the request of the previous headmaster. However, soon after the 'Most Despair-Inducing Event In Human History' occurred and Celes lost her memory.

High School of Mutual Killing
Celes later woke up from a blackout and found herself trapped in the Academy with Monokuma declaring that all students would not be allowed to leave unless they commit a perfect murder. Celes suggests that they just adapt to the new living environment and not killing each other. However, deep down she was infuriated that she couldn't continue pursuing her dream and desperately wanted to get out.

Celes provided help and insight towards the students inside when two murders occur, helping them survive, as if they picked the wrong murderer, everyone would be killed. However...

Fall
Monokuma would usually give a 'motive' for everyone to murder each other, first was 'doing something horrible to a dear person of a student', the second was 'exposing one nasty secret of a student'. Celes was unfazed with all those. However, for the third time, Monokuma offered a large sum of money for the one who graduated. This was the push for Celes to give in to her own greed to pursue her dream, the money from Monokuma and the money generated from her gambling activities would be enough to buy a castle with servants. Furthermore, seeing that the other students were crazed over the AI Alter Ego, created by the recently deceased Chihiro Fujisaki, and speaking with it like a new human being, while Celes couldn't see it as nothing more than an AI, finally made her decide that the students are not worth saving and can just be killed for her dreams like usual.

For that, Celes instigated a grand plan. First she would hide Alter Ego to a locker, causing a rift between Kiyotaka Ishimaru and Hifumi Yamada. With that, Celes approached Yamada and manipulated him to become her accomplice, saying that Ishimaru hid Alter Ego and forced Celes to confess to the crime or else she would be sexually assaulted. Yamada agreed to kill Ishimaru and they decided to put Yasuhiro Hagakure as a scapegoat, drugging him and putting him into the clunky 'Justice Robo' suit to make it look like he kidnapped Yamada.

Celes then took the other students into a goose-chase party while Yamada killed Ishimaru and made it look like he's also 'killed' by the mysterious assailant. However, Celes soon turned her back against Yamada and killed him without remorse (although the manga implied that she did have a tingle bit of remorse, but decided to ignore it).

As the Classroom Trial begun, Makoto Naegi managed to piece the information that Hagakure was innocent and eventually suspected Celes, from various blunders she made throughout the case. This is where Celes' facade drops and she starts screaming madly trying to 'defend' her innocence. However, Naegi pushed on and eventually Celes realized that she lost the case, and decided to accept her punishment with grace instead of squirming out. After handing down the key she used to hide Alter Ego to Kyouko Kirigiri, she bid the student farewell and hopes that they'll meet again in another life.

Execution
Celes' execution, titled "Versailes Style Witch Hunt Stake", had her standing on a stake to be burnt like a witch. This was the kind of romantic death she wanted. However, shortly after, a fire truck ran in blazing speed, headed towards the stake and crushed Celes to death, ruining the 'romantic' death she wanted.