mettaton ex was sitting on the shore in the beach, was looking around the monsters playing in the water and laying around, he really wanted to go in the water and swim but he was scared of it because he was a robot obviously, while he was looking at the waves coming up to his feet and go back to were it was, he saw you just running to the water and diving in (you were frisk) and whenever a large wave is coming, you duck in go under it, he gained confidence and called out to you Mettaton:"hey!"