Zol

Zol is the name of a gelatinous creature that shambles around its territory waiting for prey to come near. When hit, it may divide into Gel.

The Zol was first seen in the original Legend of Zelda in some of the underworlds. It was black in appearance and just crawled aimlessly around the dungeon, waiting for prey to come near.

In Link's Awakening, Oracle of Seasons, and Oracle of Ages, the Zol returned, although it was not limited to just dungeons, being found in almost any habitat. It also had a new attack. Some would pop out of the ground to attack enemies, giving them somewhat of an A.I. They also came in two colors. The Red Zol, who didn't pop out of the ground, would divide into two small Red Gel after being hit (although an upgraded sword could kill it without it dividing), and a Green Zol, which popped out of the ground and could be destroyed in one hit with almost any conventional weapon. This species of Zol didn't divide when killed.

The Zol may have been the precursor to the ChuChus, seen in more recent Zelda games