Ghost (Yoshi's Story)

"What have we here? Mario's little pet! I have pets too! Let's all play together."

- Baby Bowser

A ghost, also known as a worm,  is a flying green snake-like enemy that appears in the final boss fight of Yoshi's Story. Baby Bowser rides on ghosts, so if a Yoshi tries to throw an egg at Baby Bowser, the egg hits these ghosts. They are invincible, as the eggs merely bounce off the ghosts. Instead, the Yoshi has to either throw eggs at the ceiling (which is littered with falling spikes) to make the spikes fall down and land on Baby Bowser or explode the eggs in front of Baby Bowser's face.

A ghost appears in the Yoshi's Story segment of the manga Mario no Bōken Land.