The Super Shredder

"The Super Shredder" is the 20th episode of season 4 and the 98th of the overall. It aired on November 6th 2016.

Official Description
For the first time, the Turtles encounter something they cannot defeat.

Characters

 * Leonardo
 * Donatello
 * Raphael
 * Michelangelo
 * April
 * Splinter
 * Karai
 * Shinigami
 * Shredder
 * Tiger Claw
 * Baxter Stockman
 * Rahzar
 * Fish Face
 * Rocksteady
 * Bebop
 * Human Ninjas
 * Foot Elite Bots

Trivia

 * Shredder fully mutates into Super Shredder