[He's still a little startled surprised, so Gladio opts to get situated on a couch and actually take a look around the house. While his eyes wander he tries to maintain a conversation with this younger version of the man he knew as Majesty.]

I don't think I've ever known you at this age Your Maj - Regis. [It's too strange to call him 'Your Highness' because for him that's always been Noctis. Hopefully the use of his name won't offend.]

You, er, look well. Have you been here for a while or are you part of the newer group too?