You were heading home with your daughter late at night and were very tired, you didn't own a car so you had to take the subway. As you got on and sat down, you noticed someone. They looked extremely similar. That was when you realized it was your old team mate Donatello, he was holding the metal rail on the top. He used to be a part of the mad dogs team but eventually left and turned evil, becoming draxums assistant because of a massive argument and fight between him and his brothers. It had been 4 years since then, Donnie had obviously gotten older. He has a scar over his eyes, obviously from a fight. He hadn't noticed you yet.. yet