Marching Milde

Marching Milde is a giant Milde appearing in Super Mario World 2: Yoshi's Island. She is the mid-boss of World 4, encountered at the end of Marching Milde's Fort. As the fort can only be tackled by the Yellow Yoshi, this color of Yoshi is also the only one that can fight Marching Milde.

Like a regular Milde, Marching Milde does not attack, instead simply walking left and right inside its large chamber, hurting the Yellow Yoshi if he touches it from any other side than from above. As is the case with Large Mildes, jumping on Marching Milde simply causes the Yoshi to bounce off without doing any damage. To defeat this boss, the player must instead Ground Pound on top of Marching Milde to make her split apart into two smaller versions of herself. Employing the same strategy against the smaller Marching Mildes makes them split into Large Mildes, which in turn split into regular Mildes upon being Ground Pounded. Once every Milde has been destroyed or eaten, the boss is defeated.

Trivia

 * Marching Milde is one of three bosses seen outside of their boss battles, the others being Tap-Tap the Red Nose and Salvo the Slime.
 * Marching Milde is the only boss in Super Mario World 2: Yoshi's Island that can be defeated by eating her.
 * Like all Mildes, Marching Milde appears very similar to Kirby.