A variety of Monsters harass the citizens.
- Red Cap
- Charmwing
- Forest Troll
- Pixie
- Sphinx
- Underground Troll
- Mountain Troll
- Madame Toxine
- Basilisk
Event monsters:
- Joy Stealer (Introduced during December 2018 Holiday Event)
- Capricorn (Introduced during January 2019 Planetary Event)
- Black Hounds (Introduced during Moonlight Event, 30 Mar 2019)
- Scarecrow (October 2019)
- Mandrake (Introduced during Long-Awaited Fair Event, November 2019)
- Winter Guardian (Introduced during Magical Blizzard Event, December 2019)
- Shadowy Spirit (Introduced during Living Legend Event, January 2020)
- Hearteater (Introduced during Verses of Love Event, February 2020)
- Crystal Guardian (Introduced during Curse of the Crystal Event, March 2020)
- River Spirit (Introduced during Triumph of Nature Event, April 2020)
- Sparktail (Introduced during Lost Shine Event, May 2020)
- Mermaid (Introduced during Mermaid Song Event, 29 May 2020)