He was an orphan at the Al-Kamar Orphanage , a failed plan to create Order members. Gaku is a tall and muscular young man with spiky slicked back bluish-grey hair and hot pink eyes adorned with a red eyeliner in the outer corner.
He wears a pair of black square-shaped earrings, a high-collared navy-blue jacket with yellow buttons that loosely falls around his body that is covered in multiple scars with the sleeves rolled up, bandaged hands, navy blue baggy pants and white sneakers.
He always carries his weapon covered in wrappings over a bag in its right arm. After his fight with Takamura during the events of the JAA raid , Gaku lost his right ear, parts of his left middle and ring fingers, and his entire right hand.
Later on, Kashima would reattach Gaku's fingers and hand but would not be able to reattach Gaku's ear. As he now wears a circular-shaped patch in the place of his missing ear.
When Gaku was years old, he had a skinny body and wears a black tank top shirt and a pair of white shorts. Gaku is shown to be an extremely calm and laidback man who always talks calmly and rarely gets agitated or angry, even during fights or life-and-death situations such as when he lost an arm during his encounter with Takamura [5].
