In a fanfiction, they could also develop emotionally. Suppose they both experience a great loss in a duel. Instead of sulking separately, they support each other. This shared experience could deepen their bond and lead to more complex character arcs. For instance, they might start to see each other as family, which is a huge step in their character development in the Yu - Gi - Oh fanfiction world.
One possible storyline could be that Seth and Joey are rivals at first. They constantly compete in Duel Monsters tournaments. However, as the story progresses, they realize they have more in common than they thought and end up becoming friends. Maybe they team up to take on a greater threat in the Yu - Gi - Oh world, like a powerful and evil Duelist who is causing chaos.
Joey could be involved as an imaginary friend. The babysitter tells the kids all about Joey from Yu - Gi - Oh and they start to pretend that Joey is there with them, helping them solve problems or play games.
Develop its backstory more. Maybe it was once a part of a powerful dragon clan in a forgotten realm. You can explore how it was separated from its clan and what it had to endure before being captured in a card. This backstory can add depth to its character and give it more motivation in the fanfiction.
One way to develop their relationships further is through shared memories. Maybe they start to have dreams that are actually memories from Atem's past in ancient Egypt. Yugi and Yami can experience these memories with Atem, which would create a stronger bond between them. Also, if they were to train together, like learning new duel monster techniques. Yugi could learn from Yami and Atem's more aggressive and ancient styles, while they could also learn from Yugi's more modern and creative approaches. This exchange of knowledge would deepen their relationships.
Well, Yu - Gi - Oh fanfiction can be really interesting. Some of it can be really creative, like when they create new duels or new characters that fit well into the Yu - Gi - Oh universe. However, some fanfiction might deviate too much from the original concept, which can be a bit off - putting. But overall, it's a great way for fans to explore different aspects of the show that they love.
One idea could be that characters from both series meet in a new dimension created by a powerful spell card. They then have to team up to defeat a common enemy that threatens both their worlds. For example, Yuya from Arc V and Yusaku from Vrains could combine their dueling skills and strategies.
The plot could revolve around the babysitter's dream of being like Joey in the Yu - Gi - Oh world. While taking care of the kids, the babysitter might share with them how Joey's determination and courage inspired them. They could then play pretend Yu - Gi - Oh battles, with the babysitter taking on the role of Joey, teaching the kids important values through the game.
I like Syrus Truesdale. He's the underdog type of character. He struggles with self - confidence at first but as the series progresses, he grows and becomes a more capable duelist. His relationship with Jaden is also really endearing.
A good way to develop their relationship is through common goals. Let's say there is a powerful dark sorcerer threatening the Yu Gi Oh world. The Dark Magician Girl and the OC both want to stop this threat. They work together in battles, learning to rely on each other. During their adventures, they have moments of self - discovery and in turn, understand each other better. They might have disagreements along the way, but resolving these conflicts can strengthen their relationship.
If Fairy Tail characters were in Yu - Gi - Oh GX fanfiction, they would likely change the dueling landscape. Their strong bonds of friendship would also play a role. Just like in Fairy Tail, they would support each other during duels. For instance, Happy could be a sidekick that gives Natsu some sort of boost during crucial moments in a duel. Their presence would add a more magical and adventurous feel to the Yu - Gi - Oh GX dueling world.