A caseworker is an agent who works in the Department of Character Protective Services. They may be either a full-time member of the department or a moonlighter who also serves in another department. The latter is by far the more common. Each caseworker is assigned a specific canon character or set of characters as their ward. When their ward is abused by badfic, the caseworker may be called in to help deal with the fic, even in the absence of other charges.