Yumeko Jabami

Yumeko is a pale-skinned girl with long black hair that is spiked into a ponytail and brown eyes. When she gets excited, her eyes turn red. She also wears the Hayakkaou Academy uniform, which consists of a red jacket with black trim, cuffs and collar, a white button-up shirt, a dark pleated skirt, a tie, and black and gray tights. Like everyone else at the Academy, she wears brown loafers with black soles. She sometimes wears red lipstick and colored (usually red and pink) nail polish. She also wears a ring on her left thumb.

She has a fearless personality. Yumeko does not feel fear or anxiety from taking risks, which is why she is prone to making risky bets when gambling. She is insightful. She is able to expose her classmates' cheating even after several rounds of gambling, as she can easily figure out what strategies and techniques they are using. She is obsessed with gambling. Yumeko is always looking for new and more challenging games. She has a positive outlook on life. She is happy when people support her or encourage her, and values ​​their friendship highly. Despite this, Yumeko rationally understands that her behavior is immoral and vicious. She admits that she feels no remorse towards the people she has defeated and ruined in gambling, and feels guilty for her inability to empathize with her victims.

Has an outstanding mind and a phenomenal memory. Willing to take any risks for the sake of an interesting game with a strong opponent. Able to detect the smallest details on modified maps after just a few viewings. Can determine whether a six-shooter is loaded by feeling the slight difference in weight between an unloaded and loaded one.

Gambling is Yumeko Jabami's passion. Yumeko is prone to making risky bets, always looking for new and more challenging games. She does not gamble for the money, but for the thrill and potential of winning a large sum.

Yumeko Jabami enjoys gambling for the thrill of it, not for status or wealth. She values ​​friendship, even if it comes in her own way.

Yumeko Jabami states how much she hates people who gamble just for selfish gain. Jabami does not like dishonesty. When she notices that a game seems rigged, she begins to uncover who is cheating.