That this is something other than what seems to be happening to all of them eludes. Behemoths, after all, don't have a mostly upright stance or handlike forepaws, suggesting Vincent's simply in possession of another form the way Serph, himself and many others were.

It's not surprise that faces the Galian Beast, but sheer indignation. None of that overwhelming confidence has waned, and the chimera meets the lunge without hesitation, intending on allowing that initial impact to turn it to a grapple and force the smaller creature backwards with superior strength and weight, twisting his head down to attempt to clamp his own fanged jaws around the not-Behemoth's muzzle and head, not a crushing bite but a controlling one.

Drive him back, drive him down.

Only feathers and scales get in the way of Galian's claws and teeth, the former thick and baffling to a good secure bite but not true armor, and beneath it he lacks any further real defenses, no osteoderms, no plates of heavy scale, and he bleeds readily enough - it tastes bitter, chemical. His size is his greatest defense, it's going to be difficult to get a good grip for a bite to the massive blood vessels of the neck, but everything else tears easily enough from determined assaults.