Stumper

Stumpers are enemies in Captain Toad: Treasure Tracker. They are brown stump-like enemies with a wooden spike on three sides, and a smiling face on the front. Stumpers are never seen alone, always appearing in stacks, and sometimes even adjacent to each other, moving as a large rectangular prism. They cannot be defeated in any circumstance, and are immune to all attacks. Captain Toad and Toadette will only take damage from the sides of this enemy, as walking on top of it is perfectly safe. Traversing across Stumpers is a recurring theme in levels that they appear in.