"Sort of!" He nodded, "I can't walk through walls though. But back before I came to the train people on earth couldn't really see me and if they did see me then they forgot me really quick but people don't do that here!"

That would be a bit sad, if all his friends kept forgetting him. "I can jump really high though and do borderlines that are shields made of energy and when mister Zetta calls my name I turn into a motorbike."

He's not sure if that's similar to ghosts, he hasn't read many ghost stories.