Down with the Sickness
Rise of the Teenage Mutant Ninja Turtles episode
Snapshot 1 (21-09-2018 10-56 AM).png
Season Code: 008
Episode: 4B
Original airdate September 18, 2018
Written by Jesse Gordon
Producers: Vladimir Radev
Andy Suriano
Ant Ward
Directed by Brendan Clogher
Voice Direction Rob Paulsen
Supervising Director  Alan Wan
Storyboard Artist: Christina "KiKi" Manrique
Episode chronology
← Previous Next →
"Repo Mantis" "The Fast and the Furriest"

Rise of the Teenage Mutant Ninja Turtles Season 1
September 17, 2018 - November 16, 2019
List of Rise of the Teenage Mutant Ninja Turtles episodes


  1. Mystic Mayhem
  2. Origami Tsunami
  3. Donnie's Gifts
  4. War and Pizza
  5. Newsworthy
  6. Repo Mantis
  7. Down with the Sickness
  8. The Fast and the Furriest
  9. Mascot Melee
  10. Shell in a Cell
  11. Minotaur Maze
  12. Bug Busters
  13. The Longest Fight
  14. Hypno! Part Deux
  15. The Gumbus
  16. Mrs. Cuddles
  17. Stuck on You
  18. Al Be Back
  19. The Purple Jacket
  20. Pizza Pit
  21. Smart Lair
  22. Hot Soup: The Game
  23. The Evil League of Mutants
  24. Late Fee
  25. Bullhop
  26. Mind Meld
  27. Nothing But Truffle
  28. Shadow of Evil
  29. Portal Jacked!
  30. Warren & Hypno, Sitting in a Tree
  31. Operation: Normal
  32. Sparring Partner
  33. You Got Served
  34. How to Make Enemies and Bend People to Your Will
  35. Mystic Library
  36. The Purple Game
  37. Man VS. Sewer
  38. The Mutant Menace
  39. Turtle-dega Nights: The Ballad of Rat Man
  40. The Ancient Art of Ninja Hide and Seek
  41. One Man's Junk
  42. Snow Day
  43. Cloak and Swaggart
  44. Jupiter Jim Ahoy!
  45. Insane in the Mama Train
  46. End Game

Season 1Season 2

"Down with the Sickness" is the seventh episode (Episode 4B) of Rise of the Teenage Mutant Ninja Turtles. It first aired on September 18th, 2018.


Splinter has come down with the Rat Flu, and the *Turtles must deal with its different stages.



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Raph is attempting to get the high score on a video game, but Splinter interrupts, having caught Rat Flu. The Turtles are excited because they get to ask anything they want from Splinter, if they get to the 7th stage of rat flu. Splinter then lowers the temperature in the lair and shaves himself. He then enters Stage 2 and attacks the turtles. The turtles attempt to trap him in a giant hamster ball, but he escapes.


Leo: Give Raph-A-Doodle a hug!
Leo: Gesundheit.
Mikey: Omigosh! Omigosh! Omigosh! Splinter’s a zombie!
Donnie: Mikeyyy, zombies are interested in other people’s brains…
Raph: Rat flu. This is not a drill. I repeat, this is not a drill, boys.
Splinter: I feel terrible. Do I look terrible? Be honest.
Raph: You look great. Not horribly sick at all! …He’s horribly sick.
Donnie: URANIUM! We should absolutely ask for uranium! I mean—if I could finally get my hands on a little of that, we would be virtually unstopp—
Mikey: What about a brick oven for pizza?
Leo: Who’s gonna clean that? What we should ask for is matching unicorn onesies. Those are sick! Pun intended, and I nailed it.
Raph: Buckle up, boys. It’s about to get weird.
Donnie: Uh. Leo’s infected. Quarantine him.
Leo: Hey, you need me to get to the ‘Must Say Yes’ stage. We need to ask for the onesies—Whoa, it’s really hot. Is there a fire? There’s a fire here, right? The floor is made of lava?
Leo I’m gonna hug you ‘til a smile comes out!
Raph: …ENOUGH! Raph’s got this because in big time moments, leaders make big time shots, and I’m big time.
Donnie: He must say yeeesssss. Make him say yeeesss.

Splinter: Oh boy! Flu! Papa needs a new motorbike!


  • The episode shares its title with a song by Disturbed.
    • There is actually a reference to the song at the end of the episode; The narrator says "OH WAHAHAH-CHOO!" referncing the most recognizable lyric in the song, besides the song title itself.
  • There are seven stages of Rat Flu, as shown:
    • Stage 1: Fever - Splinter freezes the whole lair trying to cure himself, and he eventually shaves himself.
    • Stage 2: Wild Rat Man - Splinter becomes a wild animal to attack the Turtles.
    • Stage 3: Captain Cuddle Cakes - Splinter becomes very lovey-dovey and wants to hug and kiss his sons.
    • Stage 4: Ninja Supreme - Splinter becomes a skillful ninja and hunts down the Turtles.
    • Stage 5: Karaoke Love Songs - Splinter sings karaoke horribly.
    • Stage 6: Fanfiction - Splinter acts out his fantasy for his favorite hero.
    • Stage 7: Must Say Yes - Splinter "must say yes" to one thing the Turtles want.



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