Zamielmon (ザ ミ エ ー ル モ ン) is based on the character Samiel, the Dark Hunter, from the opera "Der Freischütz".
The opera Der Freischütz was based on a libretto by the poet Friedrich Kind, entirely inspired by popular legends. The action takes place in Germany, right after the Thirty Years' War. The love story of hunter Max for Agata (daughter of chief Cuno) involves a shooting competition between rangers, silver bullets, enchantments and the ghost hunter Samiel (the devil of Germanic mythology).
Freischütz, in German folklore, a sniper who by a pact with the demon obtained a certain number of bullets intended to hit without failing any object he wishes. As the legend is usually told, six of the Freikugeln or "free bullets" are, therefore, the sniper's will, but the seventh is at the absolute disposal of the devil himself.
Zamielmon has 6 arrows, which could represent the 6 shots, and he is of the Demon-Man type, who alludes to Freischütz, who made a pact with the devil.