Definitely Sung Jin - woo. He has a complex personality and his power - leveling journey is fascinating. Pairing the reader with him can lead to stories about the reader being part of his growth or helping him in his battles. Then there's Yoo Jin - ho. He's Jin - woo's friend, and a story with the reader and him could focus on the more human side of the Solo Leveling world, away from the intense dungeon battles.
Dante is a great choice. He's charming, powerful, and has a lot of depth. His devil - may - care attitude can create an interesting dynamic with the reader. Nero is also good. He's young and passionate, and his journey of self - discovery can be intertwined with the reader's story. Vergil is another option. His complex personality and his search for power can make for a very intense relationship with the reader.
Artemis is a great character to pair the male reader with. She has a complex personality, being tough on the outside but with a softer side. Their relationship could be based on mutual respect and growing trust as they fight side by side. Another good option is Miss Martian. She's kind - hearted and her telepathic abilities could add an interesting dynamic to the relationship with the male reader, perhaps having some moments of mind - to - mind communication.
Sid is a popular choice. He's goofy and always getting into trouble, so it could be fun to have the reader be the one to get him out of sticky situations or teach him some valuable lessons. Manny is also great. His big - hearted and protective nature makes for an interesting dynamic with the reader, especially if the reader is in some sort of danger. Diego is another one. His cool and sometimes brooding personality can create a lot of tension and chemistry with the reader.
In Solo Leveling x Reader fanfiction, the 'forced - proximity' trope is quite popular. For example, they might be trapped in a dungeon together, leading to closer interactions. The 'soulmate' trope is also seen, suggesting an unbreakable bond between the reader and Jin - woo. Additionally, the 'rival - to - lover' trope, where the reader starts off as a rival to Jin - woo in terms of power or achievement but then they fall in love.
I think Hitsugaya Toshiro is quite popular for a Bleach characters x reader love story. He's young but very mature and powerful. The age difference between him and the reader can add an interesting dynamic. And of course, Grimmjow is also a fan - favorite. His wild and aggressive personality can lead to a passionate love story, full of conflict and resolution.
Blitzo is a really interesting character to pair with the male reader. He's the founder and leader of I.M.P, so there are a lot of possibilities for power dynamics and comical situations. His impulsive and somewhat chaotic personality can create a lot of engaging storylines. Another great option is Moxxie. He's more reserved and by - the - book compared to Blitzo, which can lead to some interesting clashes and character development when paired with the male reader.
Undyne would be an interesting character to include. She is strong - willed and brave. Her initial distrust of Flowey could lead to some tense situations, especially if she thinks Flowey is a bad influence on the reader. Alphys could also play a role. She might be able to provide some scientific insights about Flowey's condition, which could be crucial for the reader in understanding him better. And Frisk, as the character who has had a significant impact on the Underground already, could have a unique relationship with the reader and Flowey, perhaps as a mediator or a source of inspiration.
It's hard to say who the 'best' is as it depends on personal taste. However, some authors who are quite popular in this niche are those who really capture Carl's character well. They might be the ones who have read the original source material thoroughly and can accurately portray his growth, his relationship with his family, and how he would interact with the reader. For example, some authors on Archive of Our Own have a great following for their Carl x Reader works.
Beca would be a great addition. She could be the sarcastic friend who gives the reader a hard time at first but then becomes a good ally. Her musical talent and unique personality would add an interesting dynamic to the story. For example, she might give the reader some tips on how to improve their singing or help them come up with a new a cappella arrangement.
Daryl Dixon is one of the most common. He's a fan - favorite character with his tough exterior and kind heart. Readers often like to pair their self - insert character with him in romantic or platonic relationships. Rick Grimes is also popular. As the former leader of the group, he has a strong presence, and it's interesting to see how a reader - character would interact with him. Another one is Glenn Rhee. His friendly and brave nature makes him a great candidate for pairing in fanfiction.