Stumpees are encountered a few times throughout the final part of the stage, usually in narrow passageways. They roll around in a set direction, destroying everything in its path, including Metal Blocks. The only way to avoid a Stumpee is to either go above it or go inside the segment it's missing as it rolls. Stumpees cannot be defeated and will instantly crush anything (including a Kirby) if they are unfortunate enough to end up beneath it.
Stumpees look like a segment of a log with triangular slice cut out of them. They have a small, stump-like nose, angry black eyes, and a nefarious mouth.
Be careful when you see any Stumpee rolling toward you in the woods.”