Another theme could be discovery. It could be about discovering new things about each other, like Freddy might find out that Fred has a hidden talent for art, or Fred might learn that Freddy has a fear of heights. This discovery aspect helps in deepening their relationship.
Well, 'A New Beginning' is also a great 'fred x freddy fanfic'. It starts with Fred moving to a new neighborhood where he meets Freddy. At first, they seem to be total opposites. Fred is shy and reserved while Freddy is outgoing and adventurous. But as time goes on, they find common interests and their relationship evolves in a very heartwarming way.
A common theme could be friendship. Since Fred and Shaggy are friends in the original context, fanfics might explore a deeper level of that friendship, maybe with some added emotional elements.
Often, themes of mutual understanding and acceptance are present. Since they are different characters, they might have to learn about each other's quirks and personalities. There could also be themes related to protecting each other, as in a situation where one character is in danger and the other comes to the rescue.
One common theme is friendship. They often start as friends and then the relationship deepens. For example, in many fics, they support each other through difficult times.
One common theme is friendship. They might explore how Freddy and Roxanne become friends in different scenarios. For example, they could be facing a common threat in the story and form a bond through that.
Love and romance are very common. Writers often explore the relationship between Fred and Ginger, how they fall in love, and their journey together.
Another theme could be mystery. Given that both characters might be associated with elements of mystery in their original stories, fanfic writers may combine their characteristics to create new mystery - filled plots, like solving a supernatural mystery together.
In 'freddy x jason lemon fanfic', a prevalent theme is the contrast between their two natures. Freddy is more of a psychological tormentor while Jason is a brute force killer. Their coming together in a relationship forces a exploration of how these two different 'horror' personalities can coexist. There can also be a theme of secrecy. Given their 'scary' reputations, they might have to keep their relationship a secret from others in the fanfic's universe. And the 'lemon' aspect can introduce a theme of vulnerability. In these more intimate moments, they may show sides of themselves that are not usually seen in the original horror concepts.
One common theme could be an exploration of their relationship in an alternate universe. Maybe they form an unlikely alliance against a common threat in some fanfics.
One common theme could be friendship. Despite their spooky nature in the original game, in fanfics, Baby and Freddy might be portrayed as friends. Another theme could be adventure, like they go on some sort of journey together within the haunted pizzeria setting.