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Unithorns are light purple-colored, partially transparent, rhinoceros-like enemies in Wario World. Their name is a pun on unicorn, a legendary mythical horse with a horn, and "thorn". Only their floating heads are seen. They can be found only when Wario falls into a pit and lands in Unithorn's Lair. They will try to bite Wario and steal his coins. To escape, Wario has to break various crates to find a single one with an Escape Spring inside. All other boxes have Smiley Bombs.
Unithorns have a fear of Smiley Bombs as they are stunned for a fraction of a second when one is uncovered. They will be stunned again once the bomb explodes.
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