One common theme could be Kai's early days of discovery. Maybe he's just starting to show his fiery nature as a baby. Another theme might be his relationship with his family in this baby version. It could explore how his parents or siblings interacted with him. Also, it could focus on his potential as a future ninja even at such a young age.
Well, a frequent theme is growth. In these fanfictions, baby Kai is often on a journey of small but important growth. This can be physical, like learning to walk or talk in a really cute way. Emotionally, it might be about him starting to understand simple emotions. And then there's the theme of protection. His family or friends might be extra protective of him because they see his future potential.
Some fanfictions might center around Kai's first encounter with elements related to his future as a ninja. For example, seeing a small fire and being strangely drawn to it. It could also be about his baby adventures in the Ninjago world. He might get into little misadventures that are endearing, like trying to chase a small animal and getting lost for a short while, which his family then has to rescue him from.
Another theme could be emotional hurt. For example, Kai might experience betrayal by a friend or teammate, which causes him internal pain. This can add depth to the story as his emotional state affects his actions and relationships.
Friendship is a very common theme. Since Kai and Lloyd are important characters in Ninjago, many fanfictions explore how their friendship develops and endures through different challenges.
One common theme is the exploration of different relationships. For example, how Female Kai Smith interacts with the other ninja characters in new and unique ways compared to the male Kai. It could be friendship, rivalry, or even romantic relationships.
One common theme is friendship. They are both ninjas in the Ninjago universe, and many fanfictions explore how their friendship develops over time, through battles and challenges they face together.
One common theme is growth and discovery. Since Jay is a baby, it's about him finding out new things in the world of Ninjago. Another theme could be protection, as the other characters have to keep baby Jay safe from various threats in the Ninjago universe.
One common theme is friendship. Despite their differences, Kai and Cole are shown to be good friends. Another theme could be loyalty. They are loyal to each other and to their team. Also, growth is a theme, as they both grow as ninjas and in their relationship with each other.
Some common themes could be love and protection. Since it involves a baby, the idea of protecting the innocent life might be prominent. Also, the relationship between Bonnie and Kai could be explored in the context of this new addition to their 'world' in the fanfiction, like how they adjust to being parents or caretakers.
Love is a key theme as well. The love between Jay and Nya deepens as they experience the journey of having a baby. And there's also the love they have for their child. It can be shown in how they protect the baby, teach it values, and make sacrifices for it. In these fanfictions, love is what binds the family together and also what drives them to be better ninjas and better people.
One common theme is sacrifice. Kai often has to sacrifice his own desires or safety for the sake of his loved one. Another theme is growth. Through his love story, Kai usually grows as a character, becoming more understanding and empathetic. And the theme of loyalty is also there, as he stays loyal to his love interest no matter what challenges they face.
One common theme is empowerment. Since it's about a female version of Kai, it often focuses on her becoming strong and independent in a world dominated by male characters. For example, she might prove herself in battles or in solving difficult problems.