Yes, there are quite a few. You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own. Just search for the names 'Harry', 'Angel', 'Spike' and 'Neville' in the search bar, and you'll likely find some interesting stories that combine these characters in different ways, such as adventures in the wizarding world with a bit of a supernatural twist from the 'Angel' and 'Spike' elements.
You can also try some specialized Harry Potter fanfiction sites. Although they mainly focus on the Harry Potter universe, some authors might include characters like Angel and Spike in their crossovers. Additionally, some forums dedicated to fanfiction might have threads where people share or recommend such stories.
Often, they explore the complex relationship between Spike and Angel. Their rivalry, their grudging respect for each other, and the possibility of them working together are common themes. For example, in many fanfictions, they might start as enemies but end up as allies due to some external threat.
I'm not sure specifically if there is a fanfiction titled exactly 'Harry is mad at Neville', but it's very possible. Fanfiction writers often play with different character dynamics. Neville is a character who has his own insecurities and growth throughout the series, and Harry also has his own emotional journey. A story where Harry is mad at Neville could explore their individual personalities and how they resolve their conflict.
Luna Lovegood could also be an interesting addition. Her unique perspective on magic and the wizarding world might bring new ideas to the group. For instance, she could have insights about some of the more mysterious magical creatures or phenomena that they come across, which could be crucial in their quests or battles.
One common theme is the love triangle. The complex relationships between Buffy, Spike, and Angel are often explored, with the characters torn between different kinds of love. For example, Buffy's love for both Spike's wildness and Angel's brooding nature.
One common theme is the exploration of their complex relationship. Given their history of rivalry and shared vampiric nature, many fanfictions dig deep into how they interact with and feel about each other.
Another theme is loyalty. Despite their differences and occasional rivalries, they are often shown to be loyal to each other in fanfictions. For example, in many stories, they will go to great lengths to protect one another.
In this fanfiction, Harry and Neville could support each other through all the challenges at Hogwarts. For example, Neville could help Harry with his Herbology studies, which Neville is quite good at. And Harry could give Neville confidence in facing his fears, like standing up to the bullies. Their friendship would be a source of strength for both of them.
Most likely not. Fanfiction that involves abuse themes, especially when it comes to beloved characters like Neville and Harry from Harry Potter, is not appropriate. It goes against the positive values and spirit of the original series.