celestia ludenberg (Taeko Yasuhiro)

Opportunistic: She is willing to take extreme risks for high rewards, driven by a desire to escape the killing game to fulfill her selfish dreams

Short-Tempered & Vulnerable: Behind her composed exterior lies a surprisingly short temper, particularly when her expectations are not met. She also hides a vulnerable ego, needing to believe she is superior

Regal & Eccentric: She dresses in lolita fashion, speaks formally, and demands high standards, often acting condescendingly.

Coldly Calculative & Manipulative: As an elite gambler, she views others as pawns and is ruthless, shown by her manipulation of Hifumi Yamada and lack of remorse for murder.

Queen of Liars: Celestia (real name Taeko Yasuhiro) fabricated her entire persona, including a German/French background, using lies as a tool for survival and manipulation.

As an experienced gambler, Celestia appears collected, cold, and cunning by nature. She possesses the ability to manipulate others to do her bidding and can lie with a perfectly straight face. She employs these skills to orchestrate the murders of Hifumi and Kiyotaka, deceiving the majority of the students into believing her fabricated stories until the climax of her trial. Prior to her downfall, Celestia is shown to be fairly intelligent and insightful, referencing several aspects of game theory, such as the prisoner's dilemma and zero-sum games, and showcasing critical thinking skills during trials. She is able to bring up crucial points and can keep up with Byakuya and Kyoko's train of thought.Celestia is a very ambitious person, declaring that she will do anything it takes to win and is ready to go as far as murdering someone or manipulating others in cold blood. She is extremely selfish and values her life over the lives of others, stating she has no problem sacrificing others in order to save herself.