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Imomushi (イモムシ, caterpillar) are enemies found in the Game Boy Advance game Wario Land 4. They only appear in the level Wildflower Fields. They are harmless green caterpillars that cannot hurt Wario and simply move back and forth very slowly. They are vulnerable to any of Wario's attacks and they yield a small Silver Coin upon defeat.
Like most enemies, they can also be grabbed and used as an object to throw when they are stunned. Imomushi are among the weakest enemies of the game, as they cannot harm the player, much like Marumen.