Smeech

Smeeches are small spherical enemies that appear only in Super Mario Galaxy 2. They appear as pink winged creatures with two beady eyes and plump lips. Their name is a portmanteau of the words "smooch" and "leech." Smeeches are first encountered in the Yoshi Star Galaxy, starting with the first mission, Saddle Up with Yoshi. They are encountered later on in the Hightail Falls Galaxy, the Haunty Halls Galaxy, the Sweet Mystery Galaxy, and the Starshine Beach Galaxy. Smeeches flee from Mario and Luigi if they encounter them. However, if either brother is riding Yoshi, they float towards him, eventually kissing Yoshi and attaching to his mouth. This prevents Yoshi from using his tongue or eating fruits, and Smeeches also latch on to his mouth if he tries to eat one. A Smeech remains attached to Yoshi's mouth for as long as it can, even when the player uses a Launch Star. The Smeech can be defeated with a spin or a jump from the unmounted Mario or Luigi; Yoshi can also perform a Head Shake to remove the Smeech, causing it to vanish and drop Star Bits. If Mario or Luigi dismounts or is knocked off Yoshi, the Smeech detaches from Yoshi's mouth and begins to hover away.

Trivia

 * If the player goes into first-person mode while riding Yoshi with a Smeech attached, they are able to see inside the Smeech, though only its lips are visible.
 * If the player collects a Power Star while riding Yoshi with a Smeech on his mouth, it appears in the "You got a Star!" scene.
 * Smeeches behave in a very similar manner as Leaps from the Kirby series.
 * They also behave similarly to the Bucculus enemies from Super Smash Bros. Brawl's Subspace Emissary.