The Ever-Burning Fire

"The Ever-Burning Fire" is the 13th episode of season 4 and the 91st of the overall. It aired on April 17th 2016.

Official Description
The team must overcome impossible odds in order to obtain the final Black Hole Generator piece.

Characters

 * Leonardo
 * Donatello
 * Raphael
 * Michelangelo
 * April O' Neil
 * Casey Jones
 * Fugitoid
 * Lord Dregg
 * Mozar
 * Zax
 * Triceraton Soldiers
 * The Vreen
 * Chompy
 * Tokka

Trivia

 * First appearance of Tokka and Chompy.
 * Last appearance of Lord Dregg, The Vreen and Zax.
 * Lord Dregg dies in this episode.
 * When Fugitoid said "I made a funny" this is a direct reference to Splinter's famous line from the 1990 Teenage Mutant Ninja Turtles film.
 * Tokka is an homage to kaiju such as Gamera, and her facial design is similar to the Kaiju from "Pacific Rim".