This includes all occasions when, at least temporarily, a character or the appearance of a character fooled, attempted to fool, or was intended to fool other characters or the audience. The key point is v there has to be some notion of trickery or manipulation.
- Multiple manipulations in the same episode count as one.
- possession, external influence, mental illness
- simulations, hallucinations (by the perceiver)
- in-character lying
- in-universe acting
In the case of borderline or unclear cases, please ask for clarification to I can improve the question.