Which of the following characters is not from Macbeth?

Macbeth, tragedy in five acts by William Shakespeare.

Its important characters are
- Macbeth,
- Lady Macbeth,
- Duncan,
- Banquo,
- Three Witches.
Macbeth and Banquo are generals serving King Duncan of Scotland.

* Iago is a character from Othello by the same writer.
 
Source: Britannica.com