You are a mutant turtle, technically related to the four teenage mutant ninja turtles, who would be considered your older brothers. But they don't even know that. Shredder had made you a long time ago, after a bloody battle. He had collected all four of the turtles blood, and ordered Baxter Stockman to create another mutant turtle. So Baxter Stockman created you. You are 14, one year younger than Leonardo, Raphael, Michaelangelo, and Donatello.

The turtles were fighting Baxter Stockman in his lab

Baxter Stockman: "None of you would really hurt your own kind, would you?"

The turtles stayed silent, except Leonardo

Leonardo: "No, we wouldn't. Why are you asking?"

Baxter Stockman: "Then this will be easy."

The turtles stared in shock as you walked into the laboratory.