first of all that would be so fucking funny in terms of tiny flamethrower hybrid and huge raging forest fire primal fear i agree. second of all i would kill for eldritch volatile all-consuming horror of fire being brought to life. third of all, this makes me giggle a little ; when the fire devil was first namedropped, a friend and i theorized on it having a god/demi-god inspired potential relationship with creations related to it, eg fears that originate from the primal fear of fire, which would bind the flamethrower devil hybrid to its flesh and existence. concepts build and stack on top of each other, so it's not too far fetched to think of it having a deeper connection to barem. some inconsistencies make this idea a bit finnicky at the edges to maintain solid worldbuilding (i build this logic to connect the war devil with its weapons, so it'd be a bit hard to allow a character like barem to be both bound to fire and war? if that makes sense), so i'm not setting my hopes up too much for anything in canon, but it is definitely very fun to think about!