1987 Turtles. He is the leader and 80s incarnation of Leonardo. 1987 Leonardo debuts in Wormquake.
Once, they were four baby red-eared slider turtles, until they got mutated by the Mutagen, which also mutated a human into a rat. The turtles mutated into the 1987 Turtles. One of the Turtles was named, Leonardo.