- Character must have "physical as well as conceptual qualities."
- The character must be "sufficiently delineated" to be recognizable as the same character whenever it appears.
- It must display consistent, identifiable character traits and attributes, although the character need not have a consistent appearance.
- The character must be "especially distinctive" and "contain some unique elements of expression."
- It cannot be a stock character such as a magician in standard magician garb.