Mets are enemies from the Mega Man series. Its name is derived from the word helmet.
In Super Adventure Rockman, Mega Man ignored a Met family with a mother, father and baby Met.
Flying Mets appear in some stages, like the one in Nitro Man's stage and when he hears a large truck honking, Mega Man must shoot up to defeat it.
Metty is a large Met. He is the boss in Wily's Fortress. Mega Man must shoot him and slide to avoid the jumping.
The Met only appeared in The Beginning. He is an anti-villain and works for Roll. He talks by making funny sounds. His models were later used for Eddie.