|Appears in (Anime)|
The Legendary Dragons are three ancient Knights who used to live in the Dominion of the Beasts, and answered Ironheart's call to defend Atlantis. Dartz transformed them into Dragons to weaken them. Their names come from the ancient philospher Plato's workings.
In the Waking the Dragons arc of Yu-Gi-Oh!, Yugi Muto, Joey Wheeler and Seto Kaiba each receive one of the three Legendary Dragon cards: "The Eye of Timaeus", "The Claw of Hermos" and "The Fang of Critias", respectively.
These cards are very unique, because "The Eye of Timaeus" can fuse with other monsters to create new monsters, while "The Fang of Critias", when activated, can fuse with Trap Cards to create monsters that possess similar effects to the Trap it fuses with. By tributing another monster, "The Claw of Hermos" can fuse with it to create Equip Cards, which are then immediately equipped to a monster.
Whilst their color (blueish) indicates them to be Spell Cards, they in fact do not belong to any regular card type. This can be backed by the fact that they are never played face-down, hence not Trap Cards, they can be played whilst Spell Canceller is on the field, hence not Spell cards and they can be played during the turn a monster has been Normal Summoned (despite they are sometimes "Summoned" or "Activated") in the Monster Card Zone.
As stated above, the three Legendary Dragons can combine with other cards to make new forms.
- The Eye of Timaeus can fuse with other monsters to become new Fusion Monsters. In the anime, Yugi fused this card with Dark Magician and Dark Magician Girl to form the respective Fusion Monsters Amulet Dragon and Dark Magician Girl the Dragon Knight.
- The Claw of Hermos can fuse with other monsters to form new Equip Spells. In the anime, Joey fused this card with Time Wizard, Red-Eyes Black Dragon, Rocket Warrior, and Big Bang Blow to make the respective Equip Spells Time Magic Hammer, Red-Eyes Black Dragon Sword, Rocket Hermos Cannon, and Big Bang Dragon Blow. In addition, Yugi also fused Queen's Knight with this card to form Goddess Bow.
- The Fang of Critias can fuse with traps to form new Fusion Monsters. In the anime, Seto Kaiba fused this card with Crush Card Virus, Tyrant Wing and Mirror Force to form the respective Fusion Monsters Doom Virus Dragon, Tyrant Burst Dragon and Mirror Force Dragon. In addition, he also fused the Tyrant Burst Dragon with his Blue-Eyes White Dragon to create the Blue-Eyes Tyrant Dragon, although this was not through the effect of The Fang of Critias.