Does Donatello have red eyes?
Physical appearance Unlike all his previous incarnations, Donnie is much taller and skinnier than his brothers. He also has a gap between his teeth and distinct brown-red eyes. In 2012 it’s implied that Donnie is younger than Raph, with Leo being the oldest and Mikey the youngest. But even if not, they didn’t develop intelligence and self-awareness until they were mutated, and those are the things that matter when talking about maturity.