Stagnox

Stagnox is the first boss in. It appears as a giant green and brown stag beetle with a purple abdomen. It is first fought in the Forest Temple, and is fought again in the Castle Town mini-game Take 'Em All On!.

Strategy
At the start of the fight, Stagnox will be on the ground and will try to ram Link with its horn. He must run to its backside and use the Whirlwind to remove the gas which will allow him to attack its vulnerable backside. Eventually, it will take flight and release Blastworms, creatures that act as Bombs when attacked. Link must hit them with his Sword and use the Whirlwind to blow one of the Blastworms at Stagnox when it charges at him to flip it over. This will leave it once again vulnerable to attack.

Etymology
Stagnox's name is derived from "stag," as in a stag beetle, upon which it is based. The "nox"-part may be derived from noxious, meaning toxic, which may refer to the poison gas Stagnox's rear end is emitting.

Trivia

 * Stagnox is the only boss in the game that appears four times.
 * According to Stagnox's Trophy from Super Smash Bros. for Nintendo 3DS, Stagnox is a female beetle.