Keron is an enemy in the Kid Icarus series. They are one-eyed, frog-like creatures with wings for arms and attack by hopping at their enemies.
Kid IcarusOverworld, where they lay and wait for Pit to approach, then leap at him with a huge burst of speed. It's best to try and predict where they are going to land before attempting to deal with them
Kid Icarus: Of Myths and Monsters
Keron does not appear in the Game Boy sequel, Kid Icarus: Of Myths and Monsters, but there are monsters called Cyclops Hoppers, which act just like Nettlers, but they are described as being more like grasshoppers than amphibians. They also attack in groups of four.
Kid Icarus: Uprising
Keron is one of the many enemies confirmed to return in the long-awaited third installment, Kid Icarus: Uprising. Kerons have been seen during the during the flying segments of the game, where they hop at Pit whenever he flies close to them
Kid Icarus: Uprising - Idol Description
"This winged, one-eyed frog uses its wings to make up for the fact it can't jump that well. Despite its laziness, Keron's surprisingly nimble spin attack and large, durable body make it a formidable foe."