Correction on the Season. Arthur it was revealed in Season 1 Episode 8: The Beginning of the End. After Morgana is caught Arthur tries to talk Uther into letting Mordred go because of his young age. Uther says it was best to do it now before he grows up and become stronger and attacks them. Arthur tells Uther we don't know if he will attack us. Later Morgana talks Arthur into helping him escape. It is not clear if Arthur sees Mordred in season two although we know Morgana and Merlin does.
Maybe, he is using a alias or maybe he talked Arthur into believing he would not use magic. After all Uther kept Gaius around knowing he had once used magic.
What worries me is that Mordred knows Merlin has magic and uses it. Mordred also knows that Merlin is Emrys.
Maybe, he is using a alias or maybe he talked Arthur into believing he would not use magic. After all Uther kept Gaius around knowing he had once used magic.
What worries me is that Mordred knows Merlin has magic and uses it. Mordred also knows that Merlin is Emrys.