What are the common themes in 'Harry is Spike Mate' fanfiction?

Well, it depends on what you consider 'good'. There are some that focus on the unique relationship between Harry and Spike, exploring how their different backgrounds and personalities interact. However, the quality can vary greatly. Some might be really well - written with in - depth character development, while others could be more of a quick, fun read with a simple plot.

A common theme is the clash of different worlds. Since Spike is from a different universe and Harry Potter is in the wizarding world, there's often exploration of how they adjust to each other's worlds.

One common theme is loyalty. Sirius is extremely loyal to Harry, and vice versa. In many fanfictions, this loyalty is what gets them through tough situations, like when Harry is facing danger from Voldemort.

One common theme is the power dynamic. Since both Harry and Klaus are powerful in their own rights, how they balance that power as mates is often explored.

One common theme is the struggle between two different worlds. Harry comes from the wizarding world and the demon from a different, often darker realm. Another theme is the idea of forbidden love, as a relationship between a human - like Harry and a demon is not usually accepted.

One common theme is the exploration of a new relationship. Since they come from different fictional worlds, how they get to know and trust each other is often explored. Another theme could be the clash of different magical systems. Harry's magic from the wizarding world and whatever magic or powers Elijah has in his world might interact in interesting ways.

Adventure is also a common theme. Given that both characters are from action - packed universes, many fanfictions will have them embark on quests or battles together. This could involve fighting against dark forces from either the Harry Potter or Lord of the Rings universes, or even new threats created specifically for the fanfiction.

The themes usually include the concept of unity. Harry and Fawkes being mates implies a unity of purpose. They might be on a quest to save the wizarding world together. Another theme is the discovery of hidden powers. Harry might discover new powers through his connection to Fawkes. And of course, there's the theme of friendship. Their relationship is based on a deep friendship that endures through many challenges in the fanfictions.

A major theme is the power of love and how it can change people. Harry, being the main character, has his own set of values and beliefs. When he becomes Severus' mate, they both have to adjust. Their relationship also often explores the theme of breaking boundaries, as their pairing is quite unexpected in the context of the original Harry Potter story. There's also the theme of forgiveness, as Severus has wronged Harry in the past in the original story, and in these fanfictions, they have to work through that.

One common theme is the power dynamic. Bellatrix is a powerful and dark witch, while Harry has his own unique power. How they balance or struggle with this power difference is often explored. Another is redemption. Some stories might have Bellatrix on a path of redemption through her relationship with Harry.