Kusaka Gentoku (久坂玄得 Kusaka Gentoku) is one of the Shouyou disciples and Joui Patriots along with Sakata Gintoki, Takasugi Shinsuke and Katsura Kotarou. He met Gintoki again in Silverization Arc and become allies to defend his village from Silver Troop invasion.
He loves to act like a thug and sometimes care about people around him. Like Yamazaki Sagaru, he loves to eat anpan.
He was loosely based on a Japanese Samurai, Kusaka Genzui who involved in Sonnou Joui movement during Bakumatsu era.