Teenage Mutant Ninja Turtles (1987): Season 9, Episode 5

9 - 5: The Showdown

Using a Hypno Transmitter, Dregg is disrupting all the TV stations in the city with a hypnotic signal, which becomes permanent after 20 minutes. After the Turtles destroy his transmitter, Dregg decides to replicate the Turtles' mutagen in order to make his Techno Gang invincible.