Knuckle Bine is a Beast Hunter and Morel's apprentice. Despite appearing aggressive, Knuckle is very compassionate and easily moved to tears.Knuckle gets along well with animals and feels compelled to protect the helpless, taking care of abandoned pets in the wake of genocide.Knuckle's sympathy and kind heart sometimes interfere with his missions. Being a pro-Hunter, Knuckle is a highly capable fighter physically and with his power named "Bankruptcy", allowing him to apply Zetsu on any Nen user.