Kyou, but specifically in Kyriakos, and only once the game has advanced far enough that the Cat team is a thing, so I can just sit here and giggle to myself like an idiot. Alternately, Kiritsugu on the same because I would think it's hilarious for other reasons.

If you mean characters you don't already play, Shintarou from Kagerou Project. (I don't think you play him anyway.)

REVERSE.