What the main character may look like.
|Movies||4 or more|
|First Appeared||"Happy Birthday, Isabella"|
The Grievance is a horror movie series. They have made 4 known movies, The Grievance, Grievance 2: The Gripe, Grievance 3: Bone To Pick, and Grievance 4: The Revenge of the Italian Jug Band, which according to Heinz Doofenshmirtz isn't scary like the others.
- The movie series may be a reference to the Ju-On franchise.