Trinexx

Trinexx is a boss from The Legend of Zelda: A Link to the Past. It is a three-headed turtle-like beast found in the seventh and next-to-last dungeon of the Dark World, Turtle Rock, located on Death Mountain. Its heads are red, gray and blue, with the red and blue heads being able to spit fire and ice respectively.

Strategy
To defeat Trinexx, Link had to wait until one of the colored heads tried to attack, then he shot the Fire Rod into the blue head's mouth, and the Ice Rod into the red head's mouth. Link then attacked the heads with his sword. When the red and blue heads were both destroyed, Trinexx's shell fell off. Link then had to attack the orange center part of Trinexx's body to defeat it.

In the Manga
In the manga adaption of A Link to the Past Trinexx is really Link's friend Ganty, who was turned into Trinexx by Agahnim in an effort to stop Link. After Link defeated Trinexx Ganty was returned into her original form and helped Link to defeat Ganon.

Etymology
Trinexx's name comes from the fact that he has three necks.

Video
This clip was provided by lleeoo2010 at youtube < > f6tXCGQSG3I <