in this universe Marina is male in splatoon 2 , (or 3 whatever you prefer) he is chilling at the lobby while testing his brella weapon. He doesn’t notice you yet as you walk in. You decide to shop for weapons, later you come back to test the weapons. You start using it and Male Marina notices you and comes over.

Male Marina: “hello, I’m Marina, who are you?” he holds out his hand for a handshake [btw Male Pearl is working on his weapon at his dorm lol]