Eerie

Eeries are ghostly dinosaurs that first appeared in Super Mario World. They can fly in either straight or wobbly lines and usually appear in packs, damaging Mario or Luigi on contact. Eeries are only encountered in Ghost Houses, and they appear in most of them. Like Boos, they can only be defeated with a Super Star. Eeries make another appearance in the Nintendo GameCube version of Yoshi's Cookie, where they appear as the fourth opponent in the game's VS. Mode if the player plays on the medium difficulty.

Super Mario World

 * Super Mario World Instruction Booklet: This is a dinosaur spook that roams the haunted house. It comes after you with its pale face and ohhhh, what a ghastly spook it is!
 * Mario Mania: As they sweep through Ghost Houses, Eeries can catch Mario off guard. He can't beat them but he can jump them or stop them with a Spin Jump.

Super Mario World: Super Mario Advance 2

 * Denizens of Dinosaur Land poster: These ghastly spooks roam about the Haunted House. They're ghostly pale, and they chase after all interlopers. Creepy!

Trivia

 * Although Eeries are absent in Super Mario Advance 4: Super Mario Bros. 3, their graphics are present in the game's code, suggesting they were intended for a level in World-e.
 * The underbodies of Bonneters in Super Mario Odyssey resemble those of Eeries.