From the Super Mario Wiki
This article is about the Snifit
sub-species named Zeus Guy. For information about the Bandit
enemy with the same name, see here
Zeus Guys are sub-species of Snifits in Yoshi's Island DS. They share their name (which comes from the Greek god, Zeus) with a kind of bandit found in the original Yoshi's Island. While the bandits throw energy balls at Yoshi, the Snifit Zeus Guys have the ability to fire four balls of fire that harm Yoshi. They can inadvertently help Yoshi out by melting unbreakable ice that even Baby Bowser cannot reach. Zeus Guys appear in the Island Museum in the subterranean enemy exhibit.