Mettaur

Mettaurs (, Metall), alternatively known as Metalls, Mettools or simply Mets, are enemies from the series.

Origin
Mettaurs are enemies from the Mega Man universe that first appeared in the first Mega Man game. Since its debut, it has appeared in every Mega Man series except Mega Man Legends. Their original series incarnation, which appears in Super Smash Bros. 4, typically wear helmets that protects them from attacks while they hide inside. When Mega Man is close, they will pop out their faces and shoot projectiles toward Mega Man in three directions: one in a horizontal direction and two in diagonal directions. There are many variations of Mettaurs: some can walk, some can fly, some can swim, and some shoot  aimed projectiles. Its attacks in Smash Run are similar to its attacks in the Mega Man games.

In Smash Run
Mettaur appear as enemies. They hide underneath their indestructible helmets until a fighter approaches them, then fire a three-way shot before ducking again. Behaviorally, this makes them similar to Octoroks, except with a slightly wider shot range. They are vulnerable to attacks only when exposed, but can be grabbed and thrown even when protected by their helmet. Fittingly for their defensive nature, they generally drop Defense stat boosts upon defeat.