Perhaps when Ash meets his dad, his dad is on a very important mission. Ash decides to join him, and during this journey, they face many challenges together. His dad could teach Ash some new battle strategies that are different from what he has learned before. They might also encounter some rare and powerful Pokémon that they have to work together to either capture or overcome. This meeting could be a turning point in Ash's Pokémon - training journey, making him more mature and experienced.
Maybe a new, mysterious villain who has a grudge against Ash or wants to use his skills for their own evil purposes. This villain might be from a far - off region and has special powers that allow them to hypnotize people. They see Ash as a useful tool to carry out their plans in the Pokémon world.
His rival, Gary, could be a likely candidate. Gary has always been competitive with Ash, and in this fanfiction, his jealousy could reach a boiling point, causing him to betray Ash for his own gain, like trying to steal his Pokémon or get credit for his achievements.
The rivals of Ash's daughter are usually popular characters in the fanfiction. They can be other young trainers who are either jealous of her abilities or simply competitive. Some fanfictions might also introduce unique side characters like a mysterious old trainer who gives her valuable advice or a young Pokémon healer who becomes her close friend. These characters add depth and variety to the story.
There could be a new character, a rival to Ash's dad from his younger days when he was an active Pokemon trainer. This rival could reappear in the fanfiction, causing some trouble or adding some drama to the story.
Naruto's chakra control could be related to how Ash controls the energy flow in his Pokemon. Maybe he could use his chakra knowledge to enhance his Pokemon's attacks or defenses. Also, his ability to learn jutsus quickly might turn into an ability for Ash to quickly understand and train his Pokemon for new moves.
Ash could become more confident and wise as a Dragon Master. His decision - making skills would improve as he deals with powerful and often unpredictable dragon Pokémon.
In certain fanfictions, a Pokémon professor or an authority figure in the Pokémon world could betray Ash. They may have their own secret agendas. For example, a professor might use Ash's research data without his permission or manipulate him into dangerous situations for their own experiments. This would make Ash feel extremely betrayed as he looks up to these figures for guidance.