[She takes a moment to doodle two figures on the whiteboard in slight chibi form: a guy who looks like a knockoff Jesus and another guy with glasses and a severely pissed expression, if only because Minako drew over the lines for his angry eyebrows several times.]

Takaya and Jin. They locked up the SEES team in an underground bunker. They're apparently from a group of Persona users called Strega, which wanted to encourage the Dark Hour to continue and for Tartarus to keep standing-- both of which, remember, allow Shadows to exist in the other Minako's world.