There are multiple subtle ways that creators can show which is the impostor.
They can:
- Mostly respond second to the Something Only They Would Say questions;
- Chime in more that the other should be killed;
- Look more desperate to not get shot;
- Be unaware of the ''core habits'' of whomever they're trying to impersonate;
- Overplay their hand by going into lavish detail about a particular point (the inverse of Something Only They Would Say, as K.C. Undercover's impersonator did).
