Zak Monday (Voiced by Sam Lerner) is the evil duplicate of Zak Saturday. Unlike him, Zak Monday possesses the Anti-Kur power and uses it to drive cryptids insane rather than calming them. He lives in the Evil World with all the other evil doubles.
Trivia[]
- Zak Monday is Evil Courtney's best friend.
- Jeffrey, Jaden, and Hiccup might face him in the future.