Gekko

Gekko is a reptilian or amphibious monster encountered several times in Majora's Mask. Gekko is a fast mover, and Link must combine his sword skills and timing to get in any hits at all. When in battle, Gecko will often call in reinforcements after a few hits.

Tatl: "That's a Gekko. And it's pretty angry! It's pretty weak, too. It really shouldn't be making a fool of you."

Gecko & Snapper
In Woodfall Temple, Gekko is the mini-boss. As an aid in combat, Gecko powers up with Snapper, a turtle-like enemy. To defeat the Snapper, the average techniques are performed, either by using Bombs the Deku Flower the exact moment it is over the pad. Once the two are separated, Gekko can be shot down from the ceiling via arrows.

Mad Jelly
This tricky mini-boss is found in Great Bay Temple. Mad Jelly will detach itself from the ceiling and try to crush Link with its fall. To avoid this, it must be frozen with the Ice Arrows, followed by killing Gekko before it calls Mad Jelly back.