One great 'X Men Evolution Nightcrawler fanfiction' is 'The Adventures of Nightcrawler'. It really delves into his character, showing his growth and his relationships with the other X - Men in a new and exciting way.
The unique character of Nightcrawler. He has such an interesting appearance and powers. In fanfiction, authors can explore his abilities in more depth, like his teleportation and how it could be used in different scenarios.
One interesting X - Men cartoon fanfiction could be about a new mutant joining the X - Men. For example, a mutant with the power to control time. This new character would bring a whole new dynamic to the team, with adventures that involve using time - related powers to stop villains from changing history.
Professor Xavier would be a great addition. His wisdom and leadership can provide guidance to both Nightcrawler and the OC. He can also offer insights into the nature of their relationship and the challenges they might face as a mutant - human (assuming the OC is human) couple. Another good character could be Wolverine. His rough and tough nature can contrast with Nightcrawler's more gentle and spiritual side, and he can act as a protector or a source of tough love for the OC.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of X - Men fanfictions. The site has a good search function that allows you to filter by various criteria such as the characters you're interested in, the type of story (romance, adventure etc.), and the rating of the story.
I really like 'Nightcrawler x Reader: The Rescue Mission'. It's a thrilling story where the reader gets into trouble and Nightcrawler has to save them. It's full of action and the chemistry between the two characters is palpable. 'Soulmate Connections' is also a good one. This fanfiction delves into the idea of them being soulmates and how they discover this fact. It has some really sweet moments. And 'Unlikely Allies' shows a different side of their relationship. They start off as just allies but slowly develop feelings for each other as they face various challenges together.
Love and romance can also be a theme, although not always. In some fanfictions, their relationship might develop into a romantic one. This could involve the usual tropes like misunderstandings, jealousy, and then finally coming together. It might also explore how their relationship affects the rest of the X - Men team and their dynamics within the mutant community.
Well, the theme of unity is quite prevalent. They come from different backgrounds but they come together. There's also the theme of protection. They protect each other from various threats. And the theme of self - discovery is also there. As they interact, they learn more about themselves. For example, Nightcrawler might discover new aspects of his powers through his relationship with Angel.