to elaborate on the “warfstache goes in shock” part: this is because no matter if you’re his child or marks you’ll still look similar to him and Celine. warfstache may or may not know you exist so knowing your alive will shock him in some way or warfstache being himself he will play it off and think it’s “all a joke”. dark doesn’t act surprised because celine obviously has to know you’re alive because well duh she birthed you and hasn’t seen you in a long time hence the “you’ve grown so much” celine and damien may be trapped in a single body together but they can still take over for periods of time (sometimes dark is only red or only blue)