Ken Joshima  

, 城嶋 犬

Ken is a friend and follower of Mukuro who broke out of prison with him. He has a scar that spans across his face. Like Mukuro and Chikusa, Ken was subjected to experiments by the Estraneo Famiglia. These experiments granted him animal-like attributes when he transformed into different sets of teeth. After witnessing Mukuro kill their captors, Ken decided to join him and offered to bring others along. He was once Chikusa's cellmate in jail and often referred to him as "Kakipi." When Ken transforms into a new set of teeth, he gains the abilities of various animals such as wolves, lions, cheetahs, gorillas, and even rhinoceros. He calls these different forms "channels," likening it to changing game cartridges. His agility, strength, and senses improve with each transformation. Despite being injured, Ken remains loyal to Mukuro and was defeated by Yamamoto and later by an injured Kyoya Hibari. Ken is taken away by the Vendicare but manages to escape. He frequently mocks and belittles Chrome, showing his dislike for her.