It's not appropriate at all. Pokemon has a positive and clean image, and creating such erotic content related to its characters, like gym leaders, would be disrespectful to the brand and its fans. It also violates the moral and ethical standards expected in the fan community.
Obviously Ash is one of the most popular characters. And then there are the gym leaders like Brock, Misty (who also has gym - related aspects in some versions), and other gym leaders from different regions.
One idea could be that Ash uses his unique battle style which he has developed over his journey to create a really challenging gym. He might include Pokémon from all the regions he has visited in his gym battles, making it a diverse and exciting experience for trainers. For example, he could have Pikachu lead the charge as always, but also include some of his less common Pokémon like Heracross or Gliscor.
In Gym 7 of Pokemon Black 2, the Gym Leader has a unique set of Pokemon and a particular battle style. You'll face challenges specific to that Gym's type. For example, the Gym might be focused on Electric - type Pokemon. You need to strategize your team accordingly, like having Ground - type Pokemon to counter the Electric - type attacks.
Well, it could be about Lanora challenging Ash to a gym battle. And during the battle, they start to respect each other's skills. Maybe Lanora realizes Ash's determination and they become friends.
The main characters are Lanora and Ash. Lanora, as a gym leader, has her own set of Pokémon and rules in the gym. Ash, on the other hand, is on his journey to become a Pokémon master. In this fanfiction, their paths cross and they interact, which forms the core of the story.
Well, in some ash gym leader fanfiction, there could be a story where Ash has to overcome personal challenges while facing a gym leader. Maybe he's feeling unconfident, but through his Pokémon's loyalty and his own determination, he manages to pull through. The gym leader might also have their own backstory that ties into the battle, making it more than just a fight for a badge.
The most popular Kalos gym leaders in fanfiction can vary. However, Korrina is often a fan favorite. Her energetic personality and her connection to Mega Evolution through her Lucario are appealing aspects. Additionally, Grant with his rock - type gym and his passion for climbing also has his own fan following in 'pokemon kalos gym leaders fanfiction' as his character can be developed in stories related to strength, determination, and the beauty of the Kalos region's rocky areas.
One popular pairing is Ash x Misty. Misty is a Gym Leader and she has a long - standing relationship with Ash in the Pokémon series, so it's often explored in fanfiction.
In Pokemon fanfiction, an Eevee pack leader could be depicted as having extraordinary leadership skills. It might lead its pack to find the best hiding places from predators or to discover the richest sources of food. For example, it could use its different evolutions' knowledge to guide the pack. An Eevee pack leader could also befriend a trainer who respects its leadership role and helps it protect its pack in a dangerous world filled with other powerful Pokemon.