Birky

Anti-Kirby (plural form: Anti-Kirbies ), also known as Kirby, is an enemy in The Legend of Zelda: Link's Awakening. While stated to be an appearance of Kirby from the Kirby series by Takashi Tezuka, Nintendo Power purports Anti-Kirbies to be Kirby's evil twins. In The Legend of Zelda: Link's Awakening, more than one of them makes an appearance, albeit not seen together. Regardless, they have a nearly identical appearance and the same inhalation ability.

Only two Anti-Kirbies appear in the northern corner rooms on the first floor of Eagle's Tower, where they jump around in random directions. If an Anti-Kirby notices Link, it tries to inhale him into its mouth. If an Anti-Kirby successfully inhales Link, it spits him out a few seconds later, causing Link to lose a heart. Anti-Kirbies are invulnerable to some of Link's attacks, including his Sword. Anti-Kirbies must take a few hits in order to be defeated. Link can defeat an Anti-Kirby by either striking it with the Magic Rod twice, by throwing two Bombs that explode on it, or by hitting it with the Boomerang four times.