Illuminator

The Illuminator is an Emblem Heartless that is found in Kingdom Hearts II. It is one of the bosses at Port Royal.

Kingdom Hearts II
A Heartless called forth in Port Royal by Pete.

It had glowing eyes and a lantern on its tail, which was used to absorb light and create darkness to help Barbossa, whose weakness was moonlight.

Kingdom Hearts II
After Sora, Donald, Goofy, and Jack Sparrow interrupt Captain Barbossa's ceremonial sacrifice of Will Turner, Barbossa calls on Pete to assist him, and Pete provides him with the Illuminator Heartless, which absorbs the moonlight in the chamber and makes Barbossa invulnerable to attack. Though Pete summoned another Illuminator each time one was defeated, Sora and his friends managed to defeat Barbossa and chase Pete off.