Yu-Gi-Oh!'s Egyptian God cards are well-known and highly regarded, as they played a significant role in the franchise's first anime. It is unfortunate, though, that the Nordic Gods (referred to as Polar Gods in the original Japanese) were largely forgotten after their initial introduction. This pattern of the franchise introducing fascinating concepts and not fully exploring their potential is not uncommon, but it still doesn't lessen the disappointment felt in this missed opportunity.
Interestingly, the introduction of these new god cards occurs in the third anime of the franchise called Yu-Gi-Oh! 5D's, which is often considered the best series in the Yu-Gi-Oh! universe. In this series, the focus is on another set of potent ancient cards known as the Signer Dragons. These mighty monsters are crucial for the main characters in their quest to halt the destructive actions of the malevolent Earthbound Immortals throughout the first season. However, the second season deviates from this storyline and shifts its attention to a futuristic threat that is not as closely tied to these cards. This allows a different group of characters who possess their own formidable ancient cards to confront this new evil.
Team Ragnarok And The Nordic Gods Could Have Had Their Own Yu-Gi-Oh! Anime
Initially introduced as antagonists for the main characters in 5D's, Team Ragnarok shares the same goal as Team 5D's. Comprised of Halldor, Dragan, and Broder, they were selected by the ancient Norse gods for a significant purpose. Equipped with the powerful Nordic God cards - Thor, Loki, and Odin - their exceptional abilities are demonstrated during their duel against Team 5D's. However, after losing the team duel to Yusei and his friends, Team Ragnarok is disregarded as only one group can confront the ultimate evil threatening New Domino City. Although they do assist the Signers in their final battle, their contribution falls short considering their immense potential.
The concept behind Team Ragnarok holds enough potential to warrant its own standalone series. It successfully combines elements from the original Yu-Gi-Oh! series, such as the inclusion of god cards, with the idea of duelists chosen by ancient entities for a specific purpose, as seen in 5D's. Moreover, exploring Norse culture and mythology would have differentiated this series from others within the franchise. Even if a full season wasn't dedicated to Team Ragnarok, the notion of two competing sets of protagonists chosen for a grand destiny is remarkably unique. It could have easily sustained a full arc's worth of plot within Yu-Gi-Oh! 5D's itself. Regrettably, these characters were squandered in a single duel.
Although Team Ragnarok did assist the Signers in defeating Z-One and his allies in the arc's conclusion, they never made another appearance in the franchise. It is regrettable that their remarkable potential was wasted, and with the current emphasis on Rush Duels in the Yu-Gi-Oh! anime, it is unlikely that they will be reintroduced. It is hoped that the Yu-Gi-Oh! franchise will learn from their oversight with Team Ragnarok and the Nordic Gods cards, and will fully explore their intriguing concepts in future endeavors.