Wait. Was he ever confirmed to be a dwarf?

This is from Akinator (a funny mobile game where this genie tries to guess a character using questions) and all the other characters from DRG were fine until I got to Mission Control, you can see it literally calls him a dwarf here. Not only is he clean shaven, but his upper half that we see matched with his disliking for certain dwarves traditions like pinging compressed gold and mushrooms leads me to believe he’s very serious about his job, or he’s not a dwarf.