Aithusa

Aithusa is a white dragon that hatched by Merlin saying its newborn name.

Biology
Aithusa is a small white dragon with big blue eyes, with only thin bones and a near-transparent membrane for his wings. Aithusa's gender is not clearly stated yet, but Kilgharrah referred to Aithusa as a "he" ("A white dragon is indeed a rare thing... and fitting, for in the dragon tongue you named him after the Light of the Sun...").

History
Having spent twenty years hunting for the three parts of the Triskelion that would lead him to the tomb where the dragon egg that would become Aithusa was kept, Julius Borden sought to control the dragon to gain power. Although he offered to share that power with Merlin when the two discovered the egg in the tomb, Merlin rejected the offer and fled with the egg as the tomb collapsed due to security traps that were activated after the egg was removed from its pedestal. Merlin later summoned Kilgharrah to learn how to hatch it, and was informed that dragon eggs would only hatch when given their names by a Dragonlord. Using this power, Merlin summoned Aithusa into existence, the small dragon subsequently hatching from the egg. Kilgharrah noted that Merlin's chosen name was very apt as it was the dragon term for the light of the sun, reflecting how Aithusa – a rare white dragon – would represent a new dawn for the world that Merlin and Arthur would create together (Aithusa).

Meanwhile Aithusa has grown quite large. He later arrives to meet Morgana and healed her fatal injuries, for reasons that are as of yet unclear. However, Morgana seems to be very grateful for this, the first she has shown this since Morgause died (The Sword in the Stone).

Legends
In the legends, Merlin saw the red dragon kill the white dragon after a long and gory duel. The red dragon is the symbol of Camelot and the white dragon is the symbol of the Saxons.

Trivia

 * Aithusa is the first and only creature to have an episode named after it.
 * It has been confirmed that Aithusa will appear in Series 5.

Appearances

 * Series 4
 * Aithusa
 * The Sword in the Stone: Part Two


 * Series 5
 * The Stranger Of The Grant: Part 1. :Part 2