Character Protagonist:"agon"=struggle;the pro side of the struggle often used to refer to the lead character in a tragedy. Antagonist:the anti side of the struggle--often the bad guy,but could be anyone/thing that struggles against the protagonist. Foil/Counterpart:reveals some aspects of the main characters by having similar or different. circumstances or by behaving similarly or differently Stock character:exemplify one particular characteristic.Character Protagonist : "agon" = struggle; the pro side of the struggle – often used to refer to the lead character in a tragedy. Antagonist: the anti side of the struggle -- often the bad guy, but could be anyone / thing that struggles against the protagonist. Foil/Counterpart: reveals some aspects of the main characters by having similar or different. circumstances or by behaving similarly or differently Stock character: exemplify one particular characteristic