Maybe an ancient evil spirit that has been awakened by Firestar's rebirth. This spirit was once banished by Firestar in his past life and now wants revenge. It possesses other cats to do its bidding and creates chaos in the clans. The spirit is very difficult to defeat as it can move from one host to another. Firestar has to figure out a way to either banish it again or destroy it completely, all while dealing with the problems it causes within the clans and the distrust it sows among the cats.
The main antagonist could be a cat within Firestar's own clan who is jealous of Firestar's status as the reborn hero. This cat believes that he or she should be the one in charge and getting all the attention. So, this jealous cat starts to plot against Firestar. They might try to make Firestar look bad in front of the clan leader or even set him up to be blamed for things he didn't do, like stealing prey or starting fights with other clans.
One possible main plot could be that the descendant is born with a special power that is linked to Firestar. This power makes them a target for some cats who want to use it for their own gain. So, the descendant has to learn to control this power while also protecting their clan. They might also have to make difficult decisions about whether to use the power in ways that go against the traditional Warrior Cats values in order to save their clan from a great threat. This would create a lot of internal conflict for the character as well as external conflicts with other cats.
In a 'Warrior Cats Firestar Reborn' fanfiction, an exciting plot could involve Firestar being reborn during a time of great turmoil in the clans. He is reborn with a special power that only he remembers from his past life. He uses this power to try and stop a prophecy that foretells the destruction of all the clans. Along the way, he has to convince the other cats that he is Firestar reborn and that they should follow his lead, which is difficult as many are skeptical of his claims.
Well, it depends. Some 'A Descendant of Firestar' fanfictions are really good. They can add depth to the existing lore, maybe introduce unique powers or storylines related to the descendant. However, others might not be so great if the writer doesn't really understand the essence of the Warrior Cats universe or if the plot is too far - fetched. But overall, if you're a fan of Firestar and the Warrior Cats world, it's worth giving it a try.
You can show her determination by having her face difficult challenges head - on. For example, when a rival tries to undermine her leadership, she doesn't back down but instead finds ways to prove herself. This shows her strength of character.
One popular 'Warrior Cats Firestar' fanfic could be 'Firestar's Quest Redux', which delves deeper into his early adventures. It often adds more details about his relationships with other cats in the clan. Another one might be 'Firestar and the Prophecy's End', where the author explores how Firestar's leadership impacts the final prophecies in the series. There are also fanfics that focus on his training days, like 'Young Firestar: The Making of a Leader', which show his growth from a young apprentice to a great leader.
One idea could be a story where Female Firestar has to lead the Clan through a severe famine. She has to make tough decisions on rationing food and finding new hunting grounds. Maybe she forms an unlikely alliance with a neighboring Clan to survive.
Graystripe could also be a main character. He's a strong and loyal cat. His friendship with Firestar could play an important role in the story. Maybe they are both in the 'games' and have to rely on each other. He could also make new friends among the other cats in the arena. And his love for Silverstream could give him an extra motivation to survive and get back to his clan. There could be flashbacks about their relationship during the fanfiction.
Firestar would be an obvious choice. As a very strong and respected cat in the warrior cats series, as a human he could be a natural leader, perhaps leading the group of cat - turned - humans in their new human lives. Another could be Graystripe. His loyalty and friendship would translate well into a human character, being a reliable friend and ally to the others.
A powerful and ancient Kryptonian entity that was sealed away long ago could be the main antagonist. It breaks free due to some events and wants to reshape Krypton according to its own dark desires. The reborn character, with their new - found powers and different perspective, stands in its way. Also, there could be a group of Kryptonian zealots who oppose any change in the traditional Kryptonian ways. They see the reborn character as a threat to their way of life and try to get rid of them.
Lex Luthor would be a classic choice. He could be jealous of the protagonist who is reborn as Superman and see him as a threat to his own power and influence. Luthor might try to use his intellect to create new weapons or strategies to defeat Superman.