Merlin, you're like a son to me. I never expected such a blessing so late in life.
Gaius, 'A Remedy to Cure All Ills'[src]
And you are more than a father to me.
Merlin, 'A Remedy to Cure All Ills'[src]

The relationship between Merlin and Gaius is quickly turned into a very strong mentor/father relationship, but not a renunciation or abrogation of his real father, Balinor, who Merlin meets in season two. Even after meeting his real father, Merlin maintains a very close bond with Gaius.

Season OneEdit

Season TwoEdit

Season ThreeEdit

Season FourEdit

Season FiveEdit


  • It should be noted, in the entirety of the whole series, only once did Merlin try an grapple someone out of anger, and that was in Witchfinder when he tried to attack Aridean for trying to get Gaius executed for something he did not do.