Legendary Dragon

The Legendary Dragons are three ancient Knights who used to live in the Dominion of the Beast, and answered Ironheart's call to defend Atlantis. Dartz transformed them into Dragons to weaken them.

=Timaeus=
 * Legendary Knight Timaeus: Timaeus's true form. Has a scar on his eye from a past battle with Dartz.
 * The Eye of Timaeus: Dragon form created by Dartz curse. The Eye of Timaeus can fuse with monster cards to become more powerful monsters.
 * + Dark Magician Girl = Dark Magician Girl the Dragon Knight
 * + Dark Magician = Amulet Dragon

=Hermos=
 * Legendary Knight Hermos: Hermos's true form. Can duplicate the effects of monsters in the graveyard.
 * The Claw of Hermos: Hermos's dragon form. Can fuse with monster cards to become a new monster that equips itself to another monster.
 * + Time Wizard = Time Magic Hammer
 * + Red-Eyes B. Dragon = Red-Eyes Black Dragon Sword
 * + Rocket Warrior = Rocket Hermos Cannon
 * + Big Bang Blow = Big Bang Dragon Blow
 * + Queen's Knight = Goddess Bow

=Critias=
 * Legendary Knight Critias: Critias' true form. Can activate trap cards from the graveyard.
 * The Fang of Critias: Critias' dragon form. Fuses with trap cards to become monster cards.
 * + Crush Card Virus = Doom Virus Dragon
 * + Tyrant Wing = Tyrant Burst Dragon
 * + Mirror Force = Mirror Force Dragon

=misc=
 * Legend of Heart: magic card created by Pegasus to restore the Legendary Dragons to their true form.
 * Knight of Destiny: created by fusing all three Legendary Knights.