Kind of like a dog.

[ He means that in an endearing way but also poking fun at his friend. ]

A dog that takes a lot of pictures and doesn't know how to play fetch.

[ It would certainly be a lot easier on him if Prompto would periodically grab his shoes for him, but he'll take what he can get, he supposes. ]

He's the only one from my world, and as far as I can tell, don't know why us two were chosen.

[ Well, he knows why he himself was chosen, but Prompto doesn't deserve to be here. Neither does this guy at all from what he can tell. ]

Looks like they might just pick out whoever they feel like from different worlds.

[ That would explain why they're currently trapped here with a dragon and a bunch of teen idols. ]