Gibo

Gibos are recurring enemies in. They are star-shaped creatures consisting of an outer body and an inner core. They occasionally separate each other when they move. Link cannot harm the core nor the body when they are together, but they become vulnerable when separated. Hitting the core causes the Gibo to be defeated.

A Link to the Past
In, Gibos appear in Thieves' Town. Their core separates from the inside of its body and move to a new location independently, while the body then follows. Both sections of the creature are able to cause damage, but the body is entirely invincible, providing protection to the vulnerable core. The Gibo is therefore only vulnerable when it attempts to move.

A Link Between Worlds
In, Gibos appear in Turtle Rock. They are nearly identical to their A Link to the Past appearance. However, instead of the core moving first, the body does it first, with the core then following. Their appearance resembles a gel-like substance rather than a gaseous cloud.

Trivia

 * Due to the transparency effect of the Gibo's cloud, certain other elements of the game will also become transparent in rooms containing them. These include Fairies and magical effects from the Magic Medallions, among other things.
 * Gibo share some similarities to Morpha from, although the Hookshot has no effect on them.