User blog comment:Morganaforever/Series 4 Cliffhanger/@comment-141.0.10.13-20120220000544/@comment-4814726-20120221234335

As I said before, Gaius, Merlin, and even the Great Dragon can be wrong aboutt things (well the dragon more likely just withheld the info) so Morded COULD be a dragonlord. Plus it would make him and Merlin sirt of equal nemesises(dont know the plural for nemesis sorry if thats off) and it would be more dramatic which is likely since its a drama show.