It could be that he has been wronged by the wizarding society. So, in a form of rebellion, he decides to become a thief. He might steal from those who he thinks are corrupt or unfair. For example, if the Ministry of Magic has been unjust to him or his loved ones, he could target them or their allies. Another possibility is that he is influenced by a powerful and devious character who convinces him that stealing is a way to gain power or freedom.
In some fanfictions, Harry Potter could potentially be depicted as a 'good thief' in a rather unorthodox sense. For example, if he's stealing something for a noble cause like stealing a powerful artifact from a dark wizard to prevent it from being misused. But in the original canon, he is not a thief.
In many 'Harry Potter Arcane Warrior' fanfictions, Harry Potter is the central figure. However, Hermione and Ron often play important supporting roles. Hermione might be the one helping Harry understand the theory behind his arcane powers, while Ron could be by his side in battles, providing a different kind of support. Sometimes, there could also be original characters created by the fanfiction author, like an old wizard who trains Harry in the ways of the arcane warrior.
One interesting 'Harry Potter Arcane Warrior' fanfiction could be 'The Arcane Ascent of Harry Potter'. In it, Harry discovers his arcane warrior abilities and uses them to face new and unexpected threats in the wizarding world. Another might be 'Arcane Potter's Hidden Powers', where his arcane powers are a secret even from his closest friends at first, and he has to learn to control them alone.
There are definitely some. You can find them on various fanfic websites. Some 'Harry Potter Thief' fanfics might have a thief stealing important magical artifacts, like a lost Horcrux or a powerful wand. This creates a whole new set of adventures and challenges for the characters in the story, which is really cool.
One popular 'Harry Potter' thief fanfiction could be about a character stealing magical artifacts from Hogwarts. Maybe it's a student who feels wronged by the school system and decides to take matters into their own hands in a rather unethical way. For example, they might steal a powerful potion ingredient that was going to be used for a very important experiment in Potions class, which then causes chaos as the teacher tries to find out who did it.
There's no official information indicating that Harry Potter has read The Lightning Thief fanfiction. Harry Potter exists in his own fictional universe, and while fans might create crossovers in fanfiction, within the original canon, there's no such scenario.
Yes, there are several. Some focus on a character becoming a master thief within the magical world of Harry Potter. They often explore how the skills of thievery can be used in a world filled with magic, secrecy, and danger. For example, a character might steal a powerful magical artifact to prevent it from falling into the wrong hands. These fanfics can be really interesting as they add a new dimension to the already rich Harry Potter universe.
A Harry Potter thief friend fanfiction could focus on a Muggle - born thief who accidentally discovers the wizarding world. They befriend Harry and get drawn into the magical chaos. Their thieving skills, which they developed on the streets in the Muggle world, are now put to use in a different context. For instance, they steal a key from a Death Eater's pocket during a battle that unlocks a hidden chamber where a powerful weapon against Voldemort is stored.