Attacky Sack

An Attacky Sack is a large, rubbery, marble-like enemy from Yoshi's Story. The name is a pun on "," a small ball-like bag. It has small eyes with green irises and long sharp teeth; its body is covered in multiple patchy colors, and it is roughly three times the size of a Yoshi. Despite its in-game size, an Attacky Sack's sprite is actually quite small. It is an invincible enemy that slowly bounces off walls. Attacky Sacks are found only in the Magma Castle, where seven of them appear.

Profiles and statistics
''If you think of it as a ball, it's half as scary. The main point is to recognize its movement.''
 * Shogakukan guide: しょせんは玉、と思えばこわさも半減. 動きを読むのがポイント.