Another theme is friendship. Byrne forms deep bonds with other characters. In some fanfics, these friendships are what help him get through difficult times. Like when he's facing a powerful enemy, his friends are there to support and fight alongside him.
A plot might also center around a new type of robot being developed by Byrne Robotics that has extraordinary abilities. This could lead to a competition among different parties to either obtain or destroy the prototype, creating a complex web of alliances and betrayals.
There could also be a journalist or an outside observer as a main character. This person might be trying to expose some secrets of Byrne Robotics or simply document the amazing things that are happening there. Their perspective would give an outsider's view into the world of Byrne Robotics fanfic.
There's also 'Byrne in the City'. In this fanfic, Byrne moves to a big, bustling city and has to adapt to a completely different lifestyle. It shows his struggles and how he overcomes them while also exploring the unique culture of the city. It has some really interesting side characters as well.
I'm not sure as I haven't read the story, but he could be the protagonist or an important character involved in the events related to the Christmas killing.
One common theme is love. Just like in the original Twilight series, fanfics often explore different types of love between the characters. It could be the intense, all - consuming love like Bella and Edward had.
Love is also a theme. Sometimes he falls in love with a new character created in the fanfic, and the story revolves around their relationship. It could be a slow - burn love story or a more immediate attraction. Another common theme is self - discovery. Fanfics often explore how Tewksbury learns more about himself, his strengths, and his weaknesses through different experiences in the fictional world.
Friendship is a very common theme. Since the BT21 characters are so diverse, stories often explore how they get along and support one another.
Love is a very common theme. Since Aphrodite is the goddess of love, many fanfics explore different types of love, from passionate romances to platonic love between her and other characters.
Another common theme is loyalty. You'll see characters having to decide where their loyalties lie, whether it's to their family in the underworld, their friends, or to a particular cause. For example, in many fanfics, a character might have to choose between loyalty to a cruel boss and doing what's right. And this creates a lot of internal and external conflict.
Adventure is another common one. Catdog could go on quests to find lost treasures or save their animal friends from danger. They might explore new lands or uncharted territories within their fictional world. It makes for exciting reading as the readers get to experience these adventures along with them.