The caves on the ice moon aren't too different from the ones on Aloha, although they house quite a bit more plant life. While scanning various glowing mushrooms, you swear you see something move in a side passageway, but when you look up, it's gone.
"YOU ARE SEEING THIS!?" Acapella asks. "IT MUST BE THE TUBEMEN"
You shrug. "I don't even know what a 'tubemen' is."
"Me," says the medic. "I was a tubemen. Buuut... that was long time ago, yes-yes? But... only other tubemen left should be Koto..."
"I have no idea what you're talking about. I'm just gonna scan some plants so I can go back up and sleep," you say.