Seconded. Wholeheartedly. As I keep saying, they are most likely both dragons or half-dragons. It would explain the speech bubbles, the flight, the magic, the size of the creature carrying the paladins and (here's a new one I've just noticed) the wind. On
panels no. 2, 3, 4 and 6 there's a wind moving Lien's cloak. It could be caused by wings (cf. the battle of Azure City), and (based on what we saw there) possibly two sets of them, since the wind keeps changing its direction (left-to-right on no. 2 and 4, right-to left on no. 3 and 6; incidentally, since Serini definitely does not have wings, let alone wings large enough to do that this might give further weight to the idea that Green is
not her).