Opal Koboi is a fictional character from the Artemis Fowl series by Eoin Colfer. After the character's May 2002 introduction in the second book in the series as a supporting antagonist, Colfer again used Koboi as the main antagonist in the fourth, sixth, and eighth books in the series, giving her the status of archenemy to Artemis Fowl II.
Read more about Opal Koboi: Introduction, Subsequent Appearances, Abilities