Doppelganger password!
Search for secret doors!
Attempt to disbelieve illusions!
You can never be too careful. So, yes, every once in a while team kick tries to embarrass a possibly-existing invisible enemy so that they can detect him/her with Blush’s power. One day they will hit gold with that tactic.
Until then, you can call them paranoid if you want.
Next: Rooting out the mole.
that would have been so cool.
If you throw enough spaghetti at the wall sooner or later some will stick to an invisible spy.
“Just because I’m paranoid, it does not mean they aren’t out to get me.”
Also: psych tests seem to be not as good as expected. Kind of reminds me of the Dr. Strangelove movie and how a strategic bomber base commander position should not fall to psychotic person like general Ripper.
More about that loyalty psych test later….
Shapeshifter!
Another good option. Also… Shrinking, Anatomical separation (ears), probably a whole host of others. Possession, Astral Travel… someone grab some d10’s and the Marvel RPG Ultimate Powers Book.
They’re thinking “Super” when they ought to be considering ‘mundane’. You don’t need superpowers if you have turned a traitor, and that doesn’t require superpowers, just money, blackmail, or bribery.