The primary aspect of Arlecchino was his physical agility. While generally depicted as stupid and gluttonous, he was very nimble and performed the sort of acrobatics the audience expected to see. The character would never perform a simple action when the addition of a cartwheel, somersault, or flip would spice up the movement.
Within these restrictions the character was tremendously elastic. Various troupes and actors would alter his behaviour to suit style, personal preferences, or even the particular scenario being performed. He is typically cast as the servant of an innamorato or vecchio much to the detriment of the plans of his master. Arlecchino often had a love interest in the person of Colombina, or in older plays any of the Soubrette roles, and his lust for her was only superseded by his desire for food and fear of his master. Occasionally, Arlecchino would pursue the innamorata, though rarely with success, as in the Recueil Fossard of the 16th century where he is shown trying to woo Donna Lucia for himself by masquerading as a foreign nobleman. He also is known to try to win any given lady for himself if he chances upon anyone else trying to woo her, by interrupting or ridiculing the new competitor.
He eventually became something more of a romantic hero around the 18th century, when his popularity provoked the Harlequinade.