Well, in many of these fanfics, the theme of acceptance is quite prominent. Trixie has had her moments of not being fully accepted in the pony community, and Luna, with her status, can help with that. Additionally, the exploration of different parts of Equestria is a theme. They might journey to new and unexplored areas together, using their magic and wits. The power of teamwork is also a common theme, as they join forces to achieve various goals, whether it's saving the day or just having a successful event.
One of the frequent themes in 'luna and trixie mlp fanfic' is growth. Trixie, who is sometimes seen as a bit of a show - off, may learn to be more humble through her interactions with Luna. Luna, on the other hand, might become more in touch with the everyday ponies of Equestria. Also, the theme of mystery can be found. They could be solving a mystery together that involves some ancient magic or a hidden part of Equestria.
A common theme is friendship. Despite their different personalities, they often end up becoming friends in fanfics. Another theme is magic. Since both are associated with magic in the My Little Pony world, their magical abilities are often explored. For example, they might combine their magic to defeat a common enemy.
Magic is also a big theme. Given that they are both magic - users in the MLP universe. Fanfics often explore new magic spells they discover together or how they use their magic to overcome challenges. Sometimes they might even compete in magic contests within the story.
Well, redemption can be a theme. If Trixie has made mistakes in the past, her romantic relationship might be a path for her to redeem herself. Also, acceptance is a big theme. Accepting herself as she is and being accepted by her love interest. And of course, the theme of magic is always there, as it is an integral part of the My Little Pony world and can influence the romantic plot in various ways.
One common theme is friendship. Since Spike and Luna are from different parts of Equestrian society, their friendship can be explored in many ways. For example, how they bridge the gap between a young dragon and a princess of the night.
Another theme is friendship. Even as a baby, Luna is shown forming bonds with other ponies or characters, like how she might interact with her sister Celestia in a more innocent and playful way. And these interactions help shape her future relationships. For example, in some fanfics, her early experiences with friendship teach her important values that she carries into her later life.
Redemption is a very common theme. Luna often has to prove herself after her return, making up for her past actions. For example, in many fanfics, she tries to regain the trust of the ponies in Equestria.
A common theme is identity. Since Luna is in a human form, she often has to grapple with who she is now compared to her pony self. Another theme is acceptance, both her accepting her new human form and the humans around her accepting this strange new being in their midst.
One popular 'luna and trixie mlp fanfic' could be 'The Adventures of Luna and Trixie'. It often features their magical adventures in Equestria, with Trixie showing off her magic skills and Luna guiding her in some cases. Another might be 'Luna, Trixie and the Nighttime Quest' where they team up to solve a mystery that occurs only during the night.
One common theme could be the battle between light and dark. Luna represents the moon and has an association with the night, which can be seen as a time of mystery and sometimes danger. King Sombra is a dark character. So the fanfic may explore this contrast in terms of their powers and personalities.
Friendship is a very common theme. Since in the My Little Pony world, friendship is highly valued. Their relationship often starts from a place of rivalry or misunderstanding, but through various events, they become friends. For example, they might help each other in a magical quest or face a common enemy together.
One theme is self - discovery. Trixie might be trying to find her place in the magical world, and Twilight can help with that. Also, the theme of adventure is quite common. They go on all sorts of adventures together, exploring new places in their magical realm. And sometimes, there is a theme of redemption, especially for Trixie if she has made mistakes in the past.