If this is truly a photo from the set of S4, I’m actually a little scared now. Last night we saw Stiles split— one true, one Void. The Void-version has those dark bruises underneath his eyes, and Dylan confirmed it with his After After Show Void-Dylan antics.
This makeup identifies the Nogitsune.
What if it’s the opposite of what I was thinking last night, and they kill Stiles by mistake, and we’re left with the Stiles-shaped Nogitsune in S4?