Turns out he's really nice. Loves to have a spot of tea. He's dreadfully sorry about the sudden drop in, though, it's really hard to find the right subspace shunt when the Galactic Department of Space Transportation doesn't update their maps often enough. Oh, by the way, were you eating that radioactive waste? Lovely stuff, that, spreads better than Branston's Pickle.
I'm kind of lame and actually use no reference hardly ever I kind of make stuff up on the fly which... honestly isn't always a good thing. But for dragons specifically, one of the nicest artists I've seen for them goes by the name of "Ciruelo" -- you'll see if you google it.