Vegeta is also a great character to include. He has a complex personality and a strong desire for power. The reborn Saiyan could have a relationship with Vegeta that ranges from being an ally to a rival. Maybe they compete for the title of the strongest Saiyan or work together to face a common enemy.
Goku is an obvious choice. Since the story is about being reborn as a Saiyan, having Goku as a mentor or a rival can add a lot of depth. His experience and power can serve as a benchmark for the protagonist.
Ame is a very popular character to include. She is a key figure in the Pokemon Reborn story, and her complex personality gives a lot of room for fanfiction writers to explore different scenarios.
Vegeta is another popular choice. Given his pride as a Saiyan, fanfictions could focus on how he views his tail, whether it's as a symbol of his superiority or something that he has to constantly keep in check. There could be stories about him training to better control any potential weaknesses related to his tail.
Gotenks is often a popular character in girl saiyan fanfiction. His unique abilities and mischievous personality make for interesting storylines.
Pan, Gohan's daughter, is also a favorite in Saiyan girl fanfiction. Writers can create stories about her training under her father and grandfather, and how she develops her own unique Saiyan powers and techniques as she grows up.
Obviously Naruto himself is a must - include. His adaptability and growth throughout the Naruto series make him a great candidate to interact with Saiyan elements. Then there's Goku from the Saiyan race. His pure - hearted nature and love for fighting would create interesting dynamics in the Naruto universe. Vegeta could also be included. His pride and constant strive for power could lead to some intense rivalries with Naruto's ninja comrades.
Goku from Dragon Ball is a must - include. He's the iconic Super Saiyan. And then maybe Thor from the Marvel Universe. Their different powers would make for an interesting dynamic. Also, Link from The Legend of Zelda could be a great addition, as he has his own set of unique abilities.
Goku is often a popular character in 'dark super saiyan fanfiction'. His powerful base form makes it interesting to explore how he could turn dark. Writers might depict him turning dark after facing an unbeatable foe that kills his friends and family, pushing him over the edge.
Kakashi could also be a great addition. As a mentor figure, he could guide Sakura in understanding and controlling her newfound powers from her rebirth. And then there are the villains. Orochimaru could be interested in Sakura's rebirth if he senses some new and powerful chakra within her. He might try to capture her for his own experiments.
You could include a passionate and talented lead dancer like Mia from 'Step Up' - type character. Also, a strict but fair dance instructor who has high expectations for their students. And don't forget about the rival dancer who is always trying to outshine the main character.
A court jester can add some humor. He can be the one who sees through the courtly pretenses and gives the emperor some down - to - earth advice in a comical way.