He became extremely attracted to video games and other Otaku interests since his lifestyle of a cursed dragon can easily accommodate it. He is hardworking and diligent in his passions, as seen with his multiple all-nighters to play games (dragons don't need to sleep to stay healthy and active). Fafnir is shown to be fairly greedy, as, in a videogame, he went for the treasure chest (which was a mimic), hates people a little. he is a dragon but is now in human form. so nothing gives it away