Zigfried von Schroeder

Zigfried von Schroeder, known in Japan as Siegfried von Schroider (ジークフリード・フォン・シュレイダー Jīkufurīdo fon Shureidā) is a fictional character and main antagonist of the KC Grand Championship story arc of the Yu-Gi-Oh! second series anime (Yu-Gi-Oh! Duel Monsters in Japan). He does not exist in the manga. In both incarnations, his name is derived from the name of Siegfried, a character in the opera, Der Ring des Nibelungen (The Ring of Nibelung). In the English version, Zigfried is voiced by Pete Zarustica, while Eisuke Tsuda takes the role in the Japanese version.

Character biography
Zigfried von Schroeder is the CEO of SchroederCorp, a rival of KaibaCorp. As the champion of Europe, he participates in Kaiba's KC Grand Championship under the name "Zigfried Lloyd" (Sieg Lloyd; ジーク・ロイド Jīku Roido). He is Leon von Schroeder's (Leonhart von Schroider) older brother. Zigfried seeks to take down KaibaCorp as revenge because he feels that Seto Kaiba stole his plans for holographic dueling technology (in the Japanese version, it is because Kaiba's project was accepted before he arrived to display his own technology). He comes across as arrogant and vain, but he has a kind side, as evidenced by how regretful he feels at the end of the arc for making Leon help him with his plot. He genuinely loves his brother, as Seto loves Mokuba. At the end of the anime, he is seen making a business deal with Maximillion Pegasus (Pegasus J. Crawford).

Deck
Zigfried plays a Valkyrie deck, the concept of which is derived from Norse mythology. By combinging his three Goddess Spell cards with "Nibelung's Ring", he is able to gradually destroy his opponent's deck while removing their cards from play. His most famous maneuver, however, is the summoning of all his Valkyrie cards simultaneously using "Ride of The Valkyries", thereby defeating the enemy with one unified strike.

Various cards in this deck are named after characters in Der Ring des Nibelungen.