Batman vs Teenage Mutant Ninja Turtles (2019)

Directed by Jake Castorena and featuring the voices of Troy Baker, Darren Criss, Eric Bauza and Kyle Mooney, Batman vs. Teenage Mutant Ninja Turtles brings Batman and the Teenage Mutant Ninja Turtles together when Shredder joins forces with Ra’s al Ghul in Gotham City. The two groups must overcome their initial conflict and work together against the Foot Clan and the League of Assassins. The film adapts the DC/IDW crossover comic by James Tynion IV and Freddie Williams II.

Från IMDB:
Batman, Batgirl and Robin forge an alliance with The Teenage Mutant Ninja Turtles to fight against the Turtles' sworn enemy, The Shredder, who has teamed up with Ra's Al Ghul and The League Of Assassins.