Hermione. She could use her vast knowledge and quick thinking to analyze Tom Riddle's actions and words. She might be able to find clues in Tom's past that Harry misses. Also, her logical approach could contrast with Tom's more devious nature and Harry's impulsive heroism. She could be the voice of reason when Harry and Tom interact, and might even come up with unique solutions to the problems that arise from their encounters.
Dumbledore would be really interesting. He has so much knowledge about Tom Riddle's past and his transformation into Voldemort. His presence could add a lot of wisdom and guidance in the story. For example, he could be the one to help Harry understand Tom's motives better, or he could try to intervene in their meetings to ensure that Harry doesn't make any dangerous mistakes.
I think Sirius Black would be an interesting addition. He has a rebellious streak and a deep sense of loyalty. His distrust of the dark side would put him on edge around Tom Riddle. His presence could create some tense moments, especially if he suspects Tom of still having dark intentions. Sirius could also offer Harry some different perspectives on dealing with Tom, based on his own experiences with the darker elements of the wizarding world.
In a 'Harry Potter meets Tom Riddle' fanfiction, a really unique plot could be that Tom Riddle is reborn as a normal wizard without the dark desires due to some powerful magic. Harry Potter meets this new Tom and they become friends at Hogwarts. However, there are still some remnants of the old Tom's power that attract dark forces. So, Harry and Tom have to work together to fend off these threats while also exploring Tom's new identity and how it affects the future of the wizarding world. This would involve a lot of character development for both Harry and Tom, as they navigate their relationship in this new scenario.
Harry would be really interesting. He has to step into the role of a teacher, which is quite different from his usual role as a student or a hero. He has to figure out how to communicate with Tom, who is essentially the most evil wizard in history. Harry's own experiences with Voldemort give him a unique perspective, and seeing how he uses that to try and teach Tom would be fascinating.
One great 'Harry Potter' Tom Riddle slash fanfiction is 'The Heir of Slytherin's Heart'. It delves deep into the complex relationship between Harry and Tom Riddle. The author does an amazing job of exploring their characters in a new light, with a plot that keeps you on the edge of your seat.
No, it's not common. Tom Riddle is a very complex and dark character. His main focus in the original story is on power, domination, and his own dark magic. Fanfiction is usually a creation of fans for fun and exploration, and it's hard to imagine the cold - hearted Tom Riddle having an affinity for it. However, in some very creative fanfictions, this could be a really different and thought - provoking take.
One popular idea in such fanfiction could be that Harry, through some magical time - turning or alternate reality scenario, discovers Tom Riddle before he fully becomes Voldemort. Harry might see the good in Tom that was lost over time and tries to prevent his fall to the dark side. Their soulmate connection could be a powerful force that draws them together, even as their destinies seem so opposed.
An old Harry Potter fanfiction about Tom Riddle could be about his time as a young wizard trying to gain followers. He was a very intelligent and manipulative character. Fanfictions might explore how he used his charm and intelligence to persuade other students to his way of thinking. Maybe he starts a secret club where they study dark magic together, which is a precursor to his later Death Eaters.
Maybe Harry would teach Tom about the consequences of dark magic. Since Harry has faced Voldemort multiple times and seen the destruction caused by dark spells. He could use these real - life (well, in the wizarding world) examples to make Tom understand that there are other paths in magic that are more positive and life - affirming.
I'm not sure if it's popular. It's a rather niche and unusual concept, so it might not have a wide following. But in the world of fanfiction, there are always small groups of people interested in unique and out - of - the - ordinary ideas.
One great 'Harry Potter Tom Riddle Fanfiction' is 'The Heir of Slytherin's Redemption'. It shows a different side of Tom Riddle, exploring what could have happened if he had been given a chance at a different path. It has a really interesting plot that keeps you hooked from start to finish.
In a fanfiction centered around this, it could explore how Harry, as the Master of Death, has a deeper connection to the magical world's balance. Tom Riddle, on the other hand, might be obsessed with obtaining this power from Harry. The story could unfold as a battle of wills and magic, with Harry trying to protect the power while also saving those under Tom's influence.