Unera

An Unera is a caterpillar or slug-like enemy found in the Tree Zone of Super Mario Land 2: 6 Golden Coins. Unera are one of the easiest enemies in the games to defeat. They crawl extremely slowly and have no real attack pattern. A simple jump attack or a fireball are enough to finish it off. A spiked version of Unera is known as a Grubby.