Merc

Merc is a strong foe, not unlike Uranos. He wanders the clouds of the Sky World Tower, throwing daggers at Pit if he's within sight. Though Merc carries a shield, he's no less vulnerable if shot from the front or back.

Kid Icarus: Of Myths and Monsters
"A muscle man who stomps around the clouds."

Trivia

 * Merc is likely based off of Mercury, the Roman god of trade and a messenger of the gods. He is said to be the Roman equivalent to Hermes of Greek mythology.