Future "Leonardo", from a distant future who founded and runs a ninjutsu school where he is depicted teaching four of his most elite students; Bob, Miles, Carmen, and Nobuko. He also leads a police force called La Costa Nostra.
One hundred years in the future, a future version of Leonardo was depicted, he still lives with his brothers, but has established his own ninja school, in which he himself acted as a teacher. Four of his top students are Nobuko, a young Japanese women who is April O' Neil's Granddaughter; Miles, a young black man; Carmen, a Latino woman, possibly his love interest; and Bob, an anthropomorphic baboon. These students seemed to have an "extended family" relationship with the Turtles, Bob in particular referring to them as uncles.