Nobody new seems to have the foggiest idea what's going on with the train, and that emboldens Otto to approach various people and at least try to suss what's going on with them. Raptor makes quite a striking figure, and Otto keeps a fair distance, tentacles maintaining a polite radius as well.

"That... is a train." Otto remarked, by way of unsure introduction, "I assume you're either from a time period before or far after such technology... or perhaps it was never developed at all." Sure, it's almost certainly not a normal train, but it's still recognizable as one!

"Try not to worry. I know it's alarming, but. You're not alone?" Tentative suggestion, there. "I'm Dr. Octavius."