In many Pokemon fanfictions, Ash's father is often left as a mystery figure. Some fanfictions might create an elaborate backstory for him, perhaps making him a powerful Pokemon trainer in a far - off region. He could be someone who had to leave Ash and his mother for some noble or dangerous quest related to Pokemon.
He could be an ex - champion who had to give up his title for some noble reason. Now that he meets Ash, he wants to see his son reach the same heights.
In some fanfictions, Pokemon Red can be depicted as Ash's father. Fanfiction often takes creative liberties with established characters and relationships. Writers might create this connection to add a new layer of depth to Ash's backstory or to explore how certain Pokemon training traditions could be passed down within a family.
One potential father figure for Ash in fanfiction could be Professor Oak. He has been like a mentor and a guiding figure in Ash's life. He has given Ash his first Pokémon and has always been there to offer advice, which could easily be developed into a father - like relationship in fanfiction.
If Red was Ash's father in a Pokemon fanfic, Ash might start with a Pikachu like in the original series, but it could be a special Pikachu that Red had some connection to. Maybe it was a Pikachu that Red had trained briefly or had a unique bond with.
In some Pokemon fanfictions, there could be creative interpretations where Ash is made out to be Red's father. However, in the official Pokemon canon, there is no such relationship between them.
Delia, Ash's mother, is an obvious choice. The fanfiction could explore their relationship. How they met, what their shared dreams were. Maybe there were some challenges in their relationship because of Ash's father's passion for Pokemon adventures. Their love story could be a beautiful and emotional part of the fanfiction, adding depth to Ash's family background.
One popular idea is that Ash's father is a Pokemon master who has been traveling the world and couldn't be with Ash. This would mean that Ash has some big shoes to fill. It also adds a sense of destiny to Ash's own journey as he unknowingly follows in his father's footsteps.
In Pokemon fanfiction, the claim that Sir Aaron is Ash's father is often a product of the creative minds of fans. Fanfiction allows for a lot of speculation and alternative storylines. There could be fanfictions where they base this on some kind of time - travel or reincarnation theory, or just a simple connection they make between the two characters' personalities or abilities. But the official Pokemon story has no connection between them, and these fan ideas are just for the enjoyment of those who like to explore different scenarios.
Another theme is redemption. If the father figure has made mistakes in the past, like Giovanni perhaps, the fanfiction might focus on his journey to make up for those mistakes and be a proper father to Ash. This could involve him changing his ways and helping Ash in his Pokémon journey instead of causing trouble.