In the TMNT AU Universe has their own Donnie too. This Donnie similar to the other Donnie ( fav.me/da4jqio )
From another Earth Donnie was a young boy with two mom's who lived in a barn far from society from all the hate and fear. But when a government organization led by a new dictator works on a secret project kidnapping different people and mutating them with a new mutagen that creates cures and diseases from the blood of the victims. A few were given special skills and incredible strength making them the cure and the dead the disease. But the experiment did something to Donnie making him lose his memories and granting him great strength avenging those who died in the facility. for the past years Donnie was hunting down any members of the facility and the government to avenge his mothers. He did have run ins with his old friend Jackie and came face to face with the man who tortured him as a kid, the bastard Cicero.