Birky

Birky, also known as Anti-Kirby (plural form: Anti-Kirbies ) and 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 Birkies appear in the northern corner rooms on the first floor of Eagle's Tower, where they jump around in random directions. If a Birky notices Link, it tries to inhale him into its mouth. If a Birky successfully inhales Link, it spits him out a few seconds later, causing Link to lose a heart. Birkies are invulnerable to some of Link's attacks, including his Sword. Birkies must take a few hits in order to be defeated. Link can defeat a Birky 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.