The Hero of Dragon Quest III: The Seeds of Salvation is a fabled, Legendary Hero from the days of lore and the ancient history of Alefgard. Though only appearing in one game, the legacy of The Hero would live on in the "Erdrick Trilogy", so named for the title bestowed upon them and carried forth by their descendants.

In Super Smash Bros. Ultimate, The Hero of Dragon Quest III is playable as an alternate costume for the game's version of the Hero, alongside the Luminary and the Heroes of Dragon Quest IV and VIII. This Hero has been given the default name Arusu (アルス) in order to differentiate him from the other three Heroes appearing in the game.