Vegeta also frequently shows up. He can be a rival to the reincarnated character, constantly pushing them to get stronger. And his pride and Saiyan heritage can be a source of conflict or inspiration for the main character.
Well, of course, Goku is a very common character. Since the story is about being reincarnated as a Saiyan, Goku's presence is often there either as a mentor or as a benchmark for the main character's power level.
Well, of course, the main character who is reincarnated as a kaiju. There are often scientists or military personnel who are trying to deal with the appearance of the kaiju. Some fanfictions might also have other kaiju as characters, either as friends or foes to the reincarnated kaiju.
The protagonist is of course a common character. Usually, they are someone who has a deep love for games in their previous life. There are also often mentors or guides in these stories. They could be an old wizard or a powerful knight who helps the protagonist understand the new world.
The most common character is obviously the tree itself. Then there are often animals like birds, squirrels, or deer that interact with the tree. Sometimes, there might be a forest spirit or a dryad that has a special connection to the tree. There could also be humans, such as a woodcutter or a wandering traveler who stumbles upon the tree.
Sakura also often appears. She might be confused by the changed behavior of the reincarnated Sasuke. Maybe the reincarnated Sasuke is more open and friendly towards her than the original Sasuke, which would lead to different interactions between them.
The other Z - fighters like Gohan, Piccolo, and Krillin are also common. Gohan could be a friend and training partner to the reincarnated character. Piccolo might be a bit more reserved but still offer his wisdom, and Krillin could be the one who provides some comic relief in the story while also being a reliable ally in battles.
Cheelai and Lemo from the Broly movie might also be paired with the reincarnated Broly. They could act as his guides or friends in the new world he finds himself in, helping him navigate the complex politics and power dynamics of the Dragon Ball universe.
In 'harry potter reincarnated fanfiction', Voldemort can be a recurring character. If Harry is reincarnated, Voldemort might sense a strange new threat or an opportunity. Snape could also be there. His complex relationship with Harry could be re - explored in these new incarnations. And of course, Luna Lovegood might make an appearance, with her unique perspective adding an interesting element to the story.
Well, in this type of fanfiction, besides Ash and Brock, there could be other trainers from the Pokémon world. For example, Gary Oak might show up. And some Gym Leaders from different regions could be in the story as well. They might interact with Misty in different ways, like having battles or sharing Pokémon training tips. Also, some of the villainous characters from the Pokémon universe, like Team Rocket, might make an appearance to create some conflict and drama.
Well, obviously Spider - Man himself is a common character. He's the central figure after all. Then there are the classic villains like Green Goblin and Doctor Octopus. They often appear to create trouble for the reincarnated Spider - Man. Mary Jane Watson also frequently shows up as a love interest or a supporting character.
Often, the main character is a human who has been reincarnated as a Pokemon. It could be a young boy or girl who was a big Pokemon fan in their previous life. For example, a boy who played all the Pokemon games and knew a lot about the lore.