-A foil is a character who directly contrasts the traits or qualities of another character. In most cases, the foil contrasts the main character, also called the protagonist.
- Foil character provides a contrast to another character, thus intensifying the impact of that other character.
-Banquo definitely serves as a foil to Macbeth in Shakespeare's Macbeth. Macbeth is predicted to become king, while Banquo is predicted to be the father of many kings. In other words, his heirs will be kings.
