Bunny Link

is a form of Link in, appearing as a fluffy pink rabbit wearing a green tunic. Link is transformed into this form as a result of entering the Dark World, which changes people to reflect their true nature.

In this form, Link is completely defenseless and cannot use any of his weapons or his shield. He can retain his original form after obtaining the Moon Pearl from the Tower of Hera.

Transformation
When Link climbs Death Mountain on his quest to find the three Pendants of Virtue, he finds a portal in the north-east side of the mountain that teleports him to the Dark World's counterpart. Without the Moon Pearl, Link finds himself transformed into Bunny Link. A Bully and his Friend nearby explain to him how the world transforms anyone who enters in reflection of their true nature. Once Link obtains the Moon Pearl from the Tower of Hera, he will no longer transform into Bunny Link whenever he enters the Dark World.

In certain Dark World dungeons, Link can temporarily be re-transformed into a rabbit regardless if he has the Moon Pearl by coming in contact with rotating, golden star-shaped objects called Rabbit Beams. However, this change wears off after a few seconds or after being hit by an enemy.

Trivia

 * In the original SNES game, even after obtaining the Blue or Red Mail, Link will continue to wear the green tunic as a rabbit. However, in the GBA remake, Link retains the color of his current tunic.
 * Ravio from may be a homage to Bunny Link, as his mask has a rabbit motif and he originates from Lorule, a land that is nearly identical to the Dark World.