Interesting:
The Turtles themselves have been merged with the personalities (and costumes) of Batman’s various Robins: Leonardo merged with Nightwing, Rafael with Red Hood, Donatello with Red Robin, and Michelangelo with Robin/Damian Wayne.
At the center of the story is the TMNT villain Krang, only in this story, he’s been merged with DC’s world-devouring villain, the Anti-Monitor — the cosmic entity who caused DC’s first “Crisis.”
https://www.newsarama.com/44954-cris...onclusion.html