Batman, Batgirl, and Robin forge an alliance with the Teenage Mutant Ninja Turtles to fight against the Turtles' sworn enemy, The Shredder, who has apparently teamed up with Ra's Al Ghul and The League of Assassins.
Teenage Mutant Ninja Turtles: The Last Ronin is a five-issue comic book miniseries published by IDW Publishing between October 2020 and April 2022. The series was written by Kevin Eastman and Tom Waltz, based on a story conceived by Eastman and Peter Laird, with art contributions from Esau and Isaac Escorza, Ben Bishop, and Eastman.