Age: 14 (But looks 16 or 17)
Wise beyond her years (except with love). Sassy. Doesn't play. Charming. Tough. Laid-back. These are the things that describe Cat Thompson. This Black Japanese girl moved from Ohio to Japan with her black father, Japanese mother, Japanese grandmother, and black aunt. Doesn't get along with her aunt too well. Torn between her roots, Cat tries to compromise by mixing the two cultures together. Black boys, white, Hispanic and Japanese kids like her. Black girls think she's a poser. She nearly drowned at age four and ended up in a coma for two months. While in coma, a wind spirit came and took care of little Cat. Just before the girl woke up, the wind spirit gave her her powers and said that her peers and friends would call her "Cat", her aunt and American relatives would call her "Adina", and her parents, senseis, and soul mate would call her "Ayako". Yusuke's other close friend but they will later fall in love.

Age: 14
Fourteen-year-old Yusuke Urameshi is the worst student at Sarayashiki Junior High. He gets terrible grades, skips class as often as possible, and has little respect for authority. On top of that, his coarse language and brash, arrogant manner get him into more altercations than can he can count. Fortunately for him, he's good at protecting himself. Really good. In fact, Yusuke has the reputation of being the toughest kid in town. But despite his killer rep, Yusuke is misunderstood. His home life is troubled. He is constantly hounded by his teachers, by his mother, and by fellow students gunning for him… As such, Yusuke is generally pretty miserable. Only after being assigned the job of Spiritual Detective does Yusuke truly begin to find his place in life.