Oz Bezarius is the main protagonist of Pandora Hearts. He is a 15-yer-old boy with blonde hair and green eyes. Oz was once the chain B-Rabbit a stuffed laminate doll owned by Alice.
During his coming of age ceremony, Oz was dragged into the abyss for the sin of "His Very Existence". There, he meets the strongest chain in the abyss, the Bloodstained Black Rabbit; which formed a contract with Oz in order to search for her lost memories. She later reveals that her true name is Alice and has developed feelings for Oz.
in truth Oz is actually the Bi Rabbit and Alice was his owner when she was alive.He is also developed feelings for Alice but as a stuff animal he was devoted even before that.