Black Panther artist Francesco Francavilla has dreamt up a roster for the Avengers circa the Age of Discovery. Meet Earth's First Heroes, a team that includes "Captain Amerigo" and a Celtic Hulk.
So I give you, for the first time I think, Hulk the Druid (a celtic primeval force of nature), Captain Amerigo (from the New World), Thor himself, and an unknown mysterious clad-armored gladiator known as Iron Man. Together they are The AVENGERS, EARTH's FIRST HEROES and they fight evils and undead armies.
Thanks for the tip, Kalaeth!