Leonardo Lightens Up
1987 TV series episode
Season Code: 4
Episode: 19
Original airdate
Written by
Episode chronology
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"Donatello Makes Time" "Funny, They Shrunk Michelangelo"
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Teenage Mutant Ninja Turtles 1990 Season
September 8, 1990 - December 1, 1990
List of Teenage Mutant Ninja Turtles episodes


  • Syndication
  1. "Plan Six From Outer Space"
  2. "Turtles of the Jungle"
  3. "Michelangelo Toys Around"
  4. "Peking Turtle"
  5. "Shredder's Mom"
  6. "Four Turtles and a Baby"
  7. "Turtlemaniac"
  8. "Planet of the Turtles"
  9. "Name That Toon"
  10. "Menace Maestro, Please"
  11. "The Turtles and the Hare"
  12. "Once Upon a Time Machine"
  13. "Rondo in New York"
  14. "Superhero for a Day"
  15. "Back to the Egg"
  • Saturday Mornings
  1. "The Dimension X Story"
  2. "Son of Return of the Fly II"
  3. "The Big Zipp Attack"
  4. "Farewell, Lotus Blossom"
  5. "The Big Cufflink Caper!"
  6. "Rhino-Man"
  7. "Were-Rats from Channel 6"
  8. "Bebop and Rocksteady Conquer the Universe"
  9. "Slash - The Evil Turtle from Dimension X"
  10. "Rebel Without a Fin"
  11. "Poor Little Rich Turtle"
  12. "The Foot Soldiers are Revolting"
  13. "Big Bug Blunder"
  14. "Donatello's Degree"
  15. "Raphael Meets His Match"
  16. "Raphael Knocks 'em Dead"
  17. "Donatello Makes Time"
  18. "Leonardo Lightens Up"
  19. "Funny, They Shrunk Michelangelo"
  20. "Michelangelo Meets Bugman"
  21. "Leonardo Versus Tempestra"
  22. "What's Michelangelo Good For?"
  23. "Beyond the Donatello Nebula"
  24. "Unidentified Flying Leonardo"
  25. "Raphael Drives 'Em Wild"
  26. "Splinter Vanishes"

1987 Season1988 Season1989 Season1990 Season1991 Season1992 Season1992-1993 Vacation in Europe sideseason1993 Season1994 Season1995 Season1996 Season

Leonardo Lightens Up is a season 4 episode of the 1987-1996 series.





  • Turtlecom
  • Personality Alterator
  • G.Clef's Super Stereo
  • Soundproof helmets

Home media releases


  • Teenage Mutant Ninja Turtles: Leonardo Lightens Up


  • Teenage Mutant Ninja Turtles Season 4
  • Teenage Mutant Ninja Turtles: The Complete Classic Series Collection



  • When Raphael takes the television remote from Leonardo, the close-up shot shows Leonardo's hand changing the channel, when Raphael has the remote.
  • When Donatello told Leonardo he had to get back to his workshop, the background showed a plastered and painted wall instead of the normal sewer brick wall.


  • First appearance of Donatello's Personality Alterator device.


  • Man: Hey that's gotta be the loudest sound I ever heard!!
  • Woman: What? I can't hear you! Someone's making the loudest sound I ever heard!!
  • Man: I'm getting outta here!!
  • Woman: Not me! I'm getting outta here!!
  • Michelangelo: Whoa, I am one hungry turtle!
  • Raphael: Yeah. *whistle* Hey, Leonardo, where's our dinner?
  • Leonardo: *in a French accent* Voila! Ho ho ho, le diner, is, how do you say, she's a served!
  • Donatello: Great, roast turkey! *The turkey explodes*
  • Leonardo: *laughs* Oh, you guys oughta see yourselves! What a bunch of...of turkey-covered turkeys! *Still laughing*
  • Donatello: You're a real battle of monkeys, you know that Leonardo?
  • Michelangelo: Yeah, dude! That exploding turkey was a total YUCK!
  • Raphael: "Yuck" is the perfect word.
  • Donatello: Who's gonna clean up this mess?
  • Leonardo:*French accent* Never fear, monsieur! I will take care of it to a suite! *pulls out a water tank and sprays the turtles* How do you say in my country: Au reservoir! *laughs* Get it? *Laughs a little more, then runs away*


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