Cupid is the classical god of Love, specifically Courtly or Romantic Love. Cupid here is not the "baby angel" that is often portrayed in artworks, especially modern ones, but is depicted as a powerful warrior and a skilled hunter.
Cupid is armed with a bow of gold, with which he shoots golden arrows that make the young man surrender and enter his service. He also has a black bow and iron arrows, which are carried for him by his squire Sweet-Looking, although these dark arrows that make a man fall out of love are not seen in use.