The theme of loss can be quite prominent in these fanfics. Spike could lose a friendship or a special object that was important to him. This loss makes him sad and forces him to deal with his emotions. Another common theme is the struggle for acceptance. Spike tries to fit in with the ponies' world, but there are always barriers, whether it's physical differences or differences in how they do things. These themes all contribute to the overall 'sad' tone of the fanfics.
One common theme could be the impact of his death on the other characters. For example, Twilight Sparkle, who has a close relationship with Spike, would likely experience a great deal of grief. Another theme might be how the Ponyville community as a whole copes with the loss of such an important figure. Since Spike is often involved in various tasks and interactions within the town.
One common theme is friendship. Since it's in the MLP universe, the bond between Spike and the ponies often plays a major role. For example, in many fanfics, Spike's friends help him when he's in trouble with a monster.
One common theme is self - discovery. As Spike embarks on a romantic journey, he often discovers more about himself. Another is friendship. In many fanfics, his friendships play a role in his romantic pursuits. For example, his friends may give him advice or support in his love life.
One common theme is self - discovery. Since Spike is banished, he has to figure out who he is without the support of his friends immediately. For example, in many fanfics, he discovers new powers or abilities during his time alone.
One common theme is friendship. Their relationship is often explored in terms of how they support and care for each other. For example, Spike might help Rarity with her work, and Rarity might give Spike advice on his personal growth. Another theme is loyalty. Spike is very loyal to Rarity, and this loyalty is often a central part of the stories. Also, the theme of growth, both personal and in their relationship, is common. They might face challenges that force them to become better versions of themselves.
One common theme is self - discovery. Spike often starts off not realizing his potential as a superhero and then gradually discovers his powers and what he can do. Another theme is friendship. His friends in the MLP world usually play a role in his superhero journey, either supporting him or getting saved by him.
One common theme is loneliness. Fluttershy is often portrayed as a shy pony, so it's easy to write about her feeling alone, even among her friends. Another theme is self - doubt. She might question her abilities, like whether she's a good enough friend or caretaker.
One common theme is failure. Rainbow Dash is often portrayed as a very confident and capable pony. So when she fails at something, like a race or a mission, it can lead to a lot of sadness. For example, she might train really hard for a big event and then not perform as expected.
One common theme is Spike's growth. Writers often explore how he matures from a young, sometimes clumsy dragon into a more confident and capable being. For example, in many stories, he overcomes his fear of failure.
One sad MLP Spike fanfic could be about Spike feeling left out when the ponies are all busy with their own tasks and he feels unimportant. It might explore his loneliness and how he tries to find his place in Ponyville.