Ash and Gary could be great main characters. They have a long - standing rivalry and putting them in a double dilemma situation would be really interesting. For example, they might have to choose between saving each other's Pikachu or a powerful, rare Pokemon.
One idea could be a story where two trainers face a double dilemma of choosing between two rare Pokemon that are both in danger. They have to decide which one to save first and how to handle the consequences of their choice.
It could be about a trainer facing two difficult choices regarding their Pokemon. For example, having to choose between evolving two different Pokemon that both have great potential but in different ways.
Ash and Gary could be great main characters for this type of fanfiction. They have a long - standing rivalry and often face difficult choices. In a double dilemma situation, they could be competing for two different Pokemon, and their different approaches to the situation would make for an interesting story. Ash might be more focused on the bond with the Pokemon, while Gary could be more interested in the Pokemon's power.
It could be Ash. He often faces difficult decisions in the Pokemon world. For example, he might have to choose between helping two different Pokemon in distress at the same time.
It could be about a double dilemma in the Pokemon world related to team - building. Maybe a trainer has been offered two rare Pokemon, but they can only choose one. However, if they choose one, they risk making an enemy of the person offering the other. So they're stuck in a double dilemma of getting a great addition to their team while also maintaining good relations in the Pokemon community.
Perhaps in the fanfiction, there's a double dilemma related to Pokemon evolution. Two trainers each have a Pokemon that can evolve in two different and equally appealing ways. Let's say one has a Bulbasaur that could either evolve into a Venusaur with enhanced grass powers or a Mega Venusaur with a new type of attack. They struggle with which path to choose, and this decision affects their friendship as well as their standing in the Pokemon league.
It's hard to say for sure without reading the fanfic, but it could be a new trainer who is just starting out and facing these double dilemmas. They might be young and inexperienced, which makes the choices even more difficult.
One common theme is identity. Since it's about double life, characters (either trainers or pokemon) often struggle with who they really are. Another theme is secrecy. There's always something hidden about their second life. For example, a pokemon might be a powerful guardian in its other life but just a normal pokemon in the eyes of its trainer.
One idea could be to have two rival trainers who both accidentally release two extremely rare and powerful Pokemon at the same time, causing double the chaos. These Pokemon could be a legendary pair that are known to cause trouble when together, like Ho - Oh and Lugia. Their combined powers could disrupt the balance of the Pokemon world, and the trainers must work together despite their rivalry to calm them down.