Commedia dell'arte features various stock characters. They can be categorized as innamorati, vecchi, zanni, and captains. Some characters can fit into multiple categories depending on context. Some commedia dell'arte characters are vastly more popular than the rest, such as Arlecchino, Colombina, Pierrot, Pulcinella, Il Dottore, and Il Capitan. Others are rarely used except for niche situations or specific regions.