Gaius was Merlin's mentor and guardian throughout the series, and as such they shared a very close and familial relationship. They quickly came to view one another as father and son and maintained a very close bond even after Merlin met his real father, Balinor, in the series 2 finale.
Season One[]
Season Two[]
Season Three[]
Season Four[]
Season Five[]
Trivia[]
- In the Merlin documentary series Secrets & Magic, Richard Wilson stated that Gaius was Hunith's elder brother and therefore Merlin's uncle. However, this relationship was never confirmed or hinted at within the show itself, leaving its canonicity uncertain.
- One of the few times in the series that Merlin tried to physically attack someone out of anger was when Aredian blackmailed Gaius into confessing to sorcery (2x07).
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