The True Hero armor is a set of Tremode armor. It is made of the Hero's set pieces, Giant Shells, Broken Hero Armorplates and True Essence. It is only available after defeating the Trinity as True Essence is only dropped by the bosses.
Crafting a full set requires Hero's Hat, Hero's Shirt, Hero's Pants, 3 Giant Shells, 3 Broken Hero Armorplates, and 15 True Essence.
Wearing any piece of the set summons a floating Terra Blade minion. Up to 3 can be summoned at a time.