Allen Walker Age 15 was abandoned by his biological parents because of the supposed of his left arm and later adopted by Mana Walker on Christmas Day. Later, Mana died and Allen turned him into an Akuma, hoping him to be fully resurrected. However, Mana cursed Allen, whose left arm first awakes as an anti-Akuma weapon and instinctively, destroys the Akuma. Marian Cross found Allen and wanted him to become an exorcist by making him his student. He fights for the souls of the Akuma and for his friends.

Kanda age 18. He has an equipment-type innocence named, Mugen. He can recover much faster than ordinary humans due to a mysterious tattoo above his heart and he hates Allen for some silly reason.

Lavi 18 year old, red-haired male Exorcist of mixed race, who aims to be a Bookman and is working along the Black Order just to be close to the events that must be seen. But he is slowly becoming more attached to his Black Order friends, and his original Bookman self is constantly being clouded by his growing care for his friends.

Lenalee Lee age 16. She's an Exorcist, whose parents were killed by an Akuma when she was a child. Due to her ability to use the Innocence, Lenalee was forced to become an Exorcist by the Black Order bosses to use her strength. However, her brother Komui decided to stay with her to not leave her alone. Therefore, she fights for her brother as well as her friends. Her perception of the "world" consists of her friends and family; whenever one of her friends dies, it seems to her as if a part of her world has been destroyed.

Komie Lee The older brother of Lenalee. Same as Lenalee, both their parents were killed by Akuma. Later, the Black Order knew about Lenalee's innocence, Dark Boots, and she was taken away from her brother. For Lenalee's sake, Komui joined the Black Order so he won't leave Lenalee alone. Now, Komui's overprotective over Lenalee.