Anti-Kirby

Anti-Kirby is an enemy appearing in Eagle's Tower of Link's Awakening. He is based on Nintendo's puffball hero, Kirby. Like the real Kirby, Anti-Kirby is able to inhale almost anything. If he sucks up Link, he will spit him out again and cause damage. Anti-Kirbies are nearly indestructable, and can only be harmed by Bombs and the Magic Rod. At the time of facing these enemies, Link will only be able to use Bombs to defeat them. Thankfully they are uncommon, and only appear on the first floor of the dungeon. Unusually, Anti-Kirby will cause more damage simply by coming into contact with Link than he will by swallowing him.

Trivia

 * While these enemies are referred to as Anti-Kirby and described as "Kirby's evil twin" in the American Nintendo Player's Guide for the game, they are simply known as Kirby in Japan.
 * Kirby resides in Dream Land, which may explain the reasoning for his appearance in the dream world of Koholint. Despite the name, however, Dream Land is a kingdom on the star-shaped planet Pop Star.
 * Kirby's Adventure, in which Kirby first gained the ability to copy talents from enemies (such as the Link-inspired Sword Kirby) was released only three months prior to Link's Awakening, which may explain why Anti-Kirby does not steal Link's abilities.
 * This is one of the few enemies that wasn't reused for the Oracle series.
 * Link would later go on to fight Kirby again in Super Smash Bros. and it's sequels.