Pic (2) belongs to reliegibus, Pic (4) belongs to Delphine, Pic (1), (3), (5) belong to Sébastien Querite.
syrosis and I had a discussion on who is the knight in Pic (2). It looks like that there are at lease two teams - Team Red/Camelot and Team Blue/Mercia. We wonder why in Pic (1) & Pic (2), Merlin is helping a blue knight getting on the horse? Why the blue knight in Pic (1) is NOT wearing the same helmet in Pic (3)? I found five pictures from S2 set with very similar horses. We can only clearly tell that in Pic (4), the knight is Arthur. In Pic (5), it is supposed to be Arthur as well, but we cannot see the face.