Donatello, a 36 year old soft-shell turtle, is the head tech-guy of the Resistance, which is a base for survivors of the Kraang invasion.

It's been 21 years since the Kraang had invaded earth. He and his brothers, Leonardo, Michelangelo, and Raphael had created the Resistance for survivors and their families. He was currently working in his lab, fully focused on his work.