Gekko

Gekko is the mini-boss of the Woodfall Temple and the Great Bay Temple in.

Strategy
Two Gekkos are fought in the game. The first one is fought in Woodfall Temple. It attacks Link by hopping at him and throwing punches. After taking enough damage, the Gekko will call a Snapper into the room and ride on its back. The Gekko must be knocked off the Snapper, either by using a Deku Flower as Deku Link or by using Bombs. Once knocked off, the Gekko will run along the walls and ceiling of the room. Link must then shoot it with his Bow in order to damage it. The Gekko will then hop back onto the back of the Snapper until Link knocks it off again.

The second Gekko is found in the Great Bay Temple and hops along the ground among a group of Mad Jelly, occasionally throwing one at Link. When attacked, it will bound toward the ceiling as all of the Mad Jelly collects into a single mass, encasing the Gekko. Shooting an Ice Arrow will freeze the mass, causing it to drop down to the floor. This causes the Mad Jelly to shatter as the Gekko is freed, allowing Link to attack it. If Link fails to shoot the Gekko, or gets to close to the Mad Jelly blob, he will be trapped inside. The Gekko will follow up with repeated punches, then finishing with a left hook that breaks Link through the bubble.

Once they are defeated, they will revert back into their normal frog forms.

Etymology
Because the Gekko does not resemble its real-life namesake and its name is only used scientifically, it may actually be a reference to the Nintendo GameCube's CPU, which shares its name with the enemy. This is possible because the GameCube was in development during the same period as Majora's Mask was.

Trivia

 * The Chu Worms which appear in the Lakebed Temple and the Cave of Ordeals from are similar to the Gekko and Mad Jelly.