Card Appearances:Legendary Knight Critias
- Yami Yugi used this card during his Duel against Dartz, summoning it with "Legend of Heart" along with "Legendary Knight Hermos" and "Legendary Knight Timaeus". Yami Yugi then had all three knights attack "Orichalcos Aristeros" with the latter's ATK becoming the same as the knights' plus 300. All three attacks failed, but "Orichalcos Shunoros" lost 3100 ATK with each attack, eventually making "Shunoros"' ATK 5900. Dartz then attacked this card with "Shunoros", but Yami Yugi used this card's effect to activate the effect of the "Mirror Force" in his Graveyard, destroying all of Dartz's monsters and inflicting the difference between this card's ATK and the destroyed monsters' ATK as damage to Dartz. However this allows Dartz to summon "Divine Serpent". Later Yami Yugi attacked "Divine Serpent" with this card and "Hermos". Yami then used this card's effect to activate the effect of the "Attack Guidance Barrier" in his hand, redirecting the attack to "Hermos". Yami then used "Hermos"' effect to banish his three Magnet Warriors, so that "Hermos" can redirect the attack back at "Critias" as well as multiply its ATK value by the number of monsters banished. Yami next used this card's effect to redirect the redirected attack back to it. This creates an infinite loop and allows Yami Yugi to send all three Legendary Knights to the Graveyard to summon "Knight of Destiny".
- In episode 182, Kaiba uses this card in the battle with The Great Leviathan. It was brought out via "Legend of Heart" along with the other two knights. All the monsters that the three chosen Duelists summoned and brought out then attacked the Great Leviathan, but the attacks did not destroy it. When the Great Leviathan attacked, Yami Yugi had "Legendary Knight Timaeus" absorb the power of "Big Shield Gardna" in order to protect everyone. This saves the chosen Duelists and the three Knights, but every other monster that was summoned was destroyed. In the next episode, the chosen Duelists each summon out three new monsters. All the monsters that the chosen Duelists have then attack the Great Leviathan, along with the Duel Spirits that have come to aid in the fight, but the Great Leviathan still did not suffer any visible damage. The Great Leviathan than attacks, destroying all of the chosen Duelists' monsters, including the three Legendary Knights.
