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Teenage Mutant Ninja Turtles
Season 4 · Episode 19
Leonardo Lightens Up
5.722mSeptember 29, 1990
A ray-gun makes Leonardo carefree and ignore his responsibilities. This leaves the Turtles defenseless and the city at the mercy of Maestro G Clef, a villain who destroys the city with music.
Episodes
- Episode 1Plan Six From Outer Space
- Episode 2Turtles of the Jungle
- Episode 3Michaelangelo Toys Around
- Episode 4Peking Turtle
- Episode 5Shredder's Mom
- Episode 6Four Turtles and a Baby
- Episode 7Turtlemaniac
- Episode 8Rondo in New York
- Episode 9Planet of the Turtles
- Episode 10Name That Toon
- Episode 11Menace, Maestro Please
- Episode 12Superhero for a Day
- Episode 13Back to the Egg
- Episode 14Son of Return of the Fly II
- Episode 15Raphael Knocks 'em Dead
- Episode 16Bebop and Rocksteady Conquer the Universe
- Episode 17Raphael Meets His Match
- Episode 18Slash the Evil Turtle from Dimension X
- Episode 19Leonardo Lightens Up
- Episode 20Were-Rats from Channel 6
- Episode 21Funny, They Shrunk Michaelangelo
- Episode 22The Big Zipp Attack
- Episode 23Donatello Makes Time
- Episode 24Farewell, Lotus Blossum
- Episode 25Rebel Without a Fin
- Episode 26Rhino-Man
- Episode 27Michaelangelo Meets Bugman
- Episode 28Poor Little Rich Turtle
- Episode 29What's Michaelangelo Good For?
- Episode 30The Dimension X Story
- Episode 31Donatello's Degree
- Episode 32The Big Cufflink Caper
- Episode 33Leonardo Versus Tempestra
- Episode 34Splinter Vanishes
- Episode 35Raphael Drives 'em Wild
- Episode 36Beyond the Donatello Nebula
- Episode 37Big Bug Blunder
- Episode 38The Foot Soldiers Are Revolting
- Episode 39Unidentified Flying Leonardo