Eyeball Monsters are enemies from Phantom Hourglass.
Eyeball Monsters are winged eyeball with two horns that live in the northern and southeastern seas of the World of the Ocean King. These enemy appear in the sky and usually come in packs of five. They slowly dash towards the S.S. Linebeck and will deal a minimal amount of damages. They are quite easy to defeat and one Cannon shot will do the trick.
They are also encountered during the battle with the Eyefish when Link try to docks at Goron Island. In the battle, Eyefish will send out Eyeball Monsters from its mouth to dash at the S.S. Linebeck. Eyeball Monsters come in two varieties; white and red. The red one is the leader of the packs, and will drop a Red Rupee when killed.
Eyeball Monster model from Phantom Hourglass