The term "character actor" refers to an actor who specializes in playing supporting roles, often portraying unique or quirky characters. These types of actors are known for their ability to fully embody and bring to life even small parts with depth and nuance. Character actors tend to be highly skilled at creating memorable performances, even if they only appear on screen for a short amount of time. They often have distinctive features or styles that make them stand out from more traditional leading men and women.