Teenage Mutant Ninja Turtles: When Worlds Collide is a double episode of the 2012 Nickelodeon animated Teenage Mutant Ninja Turtles series, consisting of the episodes When Worlds Collide, Part 1 and When Worlds Collide, Part 2. They originally aired over Nickelodeon on June 18, 2017.
Cast
- Leonardo - Seth Green
- Raphael - Sean Astin
- Michelangelo - Greg Cipes
- Donatello - Rob Paulsen
- April - Mae Whitman
- Karai - Kelly Hu
- Captain Ryan - Brian Bloom
- Sal Commander - Keith David
- Crankshaw Jr - Scott Menville
- Rook - Kate Micucci
- Bishop/Pawn/Ultromdroids/General R'Kavaka - Nolan North
- Queen - Cassandra Peterson
- Lord Dregg - Peter Stormare
- Newtralizer - Danny Trejo
- Mona Lisa - Zelda Williams