Ganta is the main protagonist from the series Deadman Wonderland. Just an ordinary middleschooler, he got caught up in a disaster that got his class slaughtered aside from himself which led to him being falsely incarcerated to Deadman Wonderland, an island prison/amusement park being put the blame for it. Prior to it he lived at a medical facility with his mom Sorae and childhood friend Shiro but after the Tokyo earthquake, he would later live separately from them. During the school incident he was given the ability to manipulate his blood thanks to an encounter with the masked "Wretched Egg" which resulted in a red jewel being forced into his chest and whom he'd only hear rumors living at the facility. He currently lives in the underground G-Block there where Deadmen like him are kept and forced to fight.

Ganta is young with an average build, short black hair and gray eyes. In certain circumstances when using his Branch a red crystal would be visible in the center of his chest.

While just a plain human, his only noteworthy power is his Branch of Sin called "Ganta Gun", being able to manipulate his blood by firing his blood as condensed bullets from his hands which can pierce hard objects or opponents. An advanced version he learns later can manifest his blood followed by energy from the Nameless Worm into a larger devastating blast.