• Non Sequitur Scene:
    • A dragon coming out of absolutely nowhere(pun not intended) and eating Eustace in the last five seconds of the episode.
    • Eustace getting mauled by a Siberian Tiger while deer hunting.
    • Seems as though animals are always coming out of nowhere to attack Eustace, as he got attacked by a giant squirrel in "Family Business".
    • Most of Courage's nightmares from the last episode could count, especially that blue thing. It really had no importance to the rest of the episode except to scare you straight and it really wasn't seen or mentioned again in those other nightmares.
    • The way Katz gets defeated in "Katz Under the Sea".
    • "Snowman's Revenge" has Snowman breaking out into a So Bad It's Good musical number about... a chilly love story? Huh?
    • "Courage Meets The Mummy" opens with an archeologist dusting off a gem inside the Mayan temple, which then shoots out a beam of light which gets reflected off some things and causes a disco ball to come out of the ceiling while some music plays for a brief moment. Afterwards, the archeologist just shrugs it off and continues dusting off the gem stone.
  • Cargo Ship: In "The Gods Must Be Goosey", the Goose and Eustae's Truck are getting married at the end of the episode.
  • Complete Monster:
    • Katz. Most of the villains are sort of cartoonishly ineffectual, even if they are loaded with Nightmare Fuel, but Katz is implied to have successfully killed many, many victims. "Care for a bit of sport before dying, dear boy?"
    • The Great Fusilli initially seems like a charming (if somewhat sinister) traveling magician taking his show on the road, and allows Courage as well as his owners Eustace and Muriel to perform for an imaginary audience. However, his true evil nature is revealed when Courage stumbles upon a back room full of lifeless human puppets. It turns out that Fusilli is a Serial Killer of sorts who uses enchanted strings that turn people into lifeless puppets, effectively killing them so he can play around with their lifeless bodies for his entertainment. As one would expect Courage defeats the villainous magician, but not before Eustace and Muriel have been turned into puppets, leaving Courage to essentially play with their lifeless bodies in order to pretend that they're still alive. Thankfully negative continuity is in effect, but it's still considered to be among the darkest, creepiest, and most downright disturbing episodes in the series for a very good reason.
  • Crowning Music of Awesome:
    • The soundtrack to the episode "The Tower of Dr. Zalost".
    • Also the end of the Doc Gerbil episode during the boat chase scene.
    • the person who composed that disturbing yet awesome theme in "Windmill Vandals" deserves a medal.
    • The subtle organ music that plays during certain events. It plays quite a bit clearer in the quilt club episode, one place where it's really noticeable.
    • Katz's Leitmotif, also a good case of Hell Is That Noise.
    • The Snowman's song from "Snowman's Revenge".
    • The Great Fusilli's theme, in its entirely appropriate Creepy Circus Music style.
  • Ear Worm: The themes for Doc Gerbil and King Ramses, as well as Flan King's hypnotic command to "buy Flantasy Flan".
  • Ensemble Darkhorse:
    • Freaky Fred.
    • Di Lung. The recurring Asian guy.
    • King Ramses' also qualifies for some reason.
    • The computer.
  • Evil Is Sexy: the Queen of the Black Puddle.
  • Fan Nickname: The "Perfect Trumpet Thingy" for the blue thing in the first of Courage's nightmares in "Perfect" and "Violin Girl" for the Demon Head in "Courage in the Big Stinkin' City".
    • Courage, Muriel, and Eustace together as a group is usually called "the Bagges" or "the Bagge family" by fans.
  • Hell Is That Noise: Frequently.
  • Hilarious in Hindsight:
  • Jerkass Woobie: Eustace, in his more humane moments.
  • Les Yay: Kitty and Bunny from the episode "The Mask".
  • Magnificent Bastard: Katz.
  • Memetic Mutation: "Watch where you're goin', ya foo!"
    • STUPID DOG! YA MADE ME LOOK BAD! OOGA BOOGA BOOGA!
  • Moral Event Horizon: Eustace crosses this in "Ball for Revenge" when he gathers up many villains to kill Courage.
  • Nightmare Fuel: A lot of the more surreal stuff. It even has it's own page.
  • Paranoia Fuel: Kitty could see Eustace and Muriel doing things in secret (sneaking cake, not fixing things) when they couldn't tell.
  • Periphery Demographic
  • Seasonal Rot: a lot of season three and four episodes aren't nearly as memorable as pretty much every episode in season one and two. They're still considered pretty good, though.
  • Squick:
    • The idea of on of the Valkyries falling in love with the incredibly disgusting Troll king, and soon the other Valkyries and the trolls falling in love is just, gross. Don't think about their Honeymoon to much...
    • That scene doubles as a Crowning Moment of Funny because the as the Valkyrie and Troll King were singing about how much they love each other, they would not. Stop. Singing , Despite the fact that the rest of the Valkyries and Trolls were on their way to the cave. Added bonuses include going to the scene of the Valkyries and Trolls running their way over there, and cutting back to the Valkyrie and Troll King, STILL SINGING, and cutting back over and over, but also Courage Lampshading it.
    • The entire "The Clutching Foot" episode. Namely the scene where Courage licks the foot as a cure.
  • Tear Jerker: "The Last Of The Star Makers". *sniffle*
  • Ugly Cute: The Hunchback Of Nowhere.
  • Most characters, due to the art style.
  • Uncanny Valley: Several.
    • The first nightmare in the episode "Perfect".
    • And the Harvest Moon in "The House Of Discontent".
    • The Magic Tree of Nowhere. [dead link]
    • The Demon Head in "Courage In the Big Stinkin' City".
    • King Ramses' in "King Ramses' Curse".
  • What Do You Mean It's for Kids?: A lot of people probably think Courage is for an adult audience with all the strange horror.
  • The Woobie: Courage takes a lot of crap.
    • The Hunchback of Nowhere.
    • In direct contrast to most "villains", Freaky Fred is a perfectly kind individual whose shaving... thing lost him his pet, his girlfriend, his job, and landed him in a mental institution.
    • Iron Woobie: Courage again.
      • And Freaky Fred, again. He may be sympathetic, but he's still, well, freaky and he seems to take the bad things in his past in stride.
    • Jerkass Woobie: Eustace - his family has been just as bad to him as he's been to everybody else, and his life is largely a study in failure.
      • Kitty from "The Mask". Her hatred of dogs is perfectly justified when you find out what happened to her best friend...
    • Woobie, Destroyer of Worlds: Dr. Zalost.
      • The Snowman. The poor guy lost all of his friends and family because of global warming, is it really any wonder that he wanted to freeze everything in the entire world?