You can try fanfic websites like Archive of Our Own. It has a large collection of fanfics from various fandoms, and there's a good chance you'll find some great 'marnie x gloria fanfic' there.
There's a fanfic called 'Marnie and Gloria's Bond'. It details how they meet and support each other through various challenges in their fictional world. The writer does a great job of portraying their unique relationship dynamics.
One great example could be a story where Marnie and Gloria team up for a Pokemon tournament. They start as rivals but gradually learn to respect and support each other. Their different training styles and Pokemon choices make for an interesting dynamic in the story.
In fanfictions, their Pokemon teams also add to the interest. The different types of Pokemon they have can create various scenarios. For instance, if Gloria has a fire - type Pokemon and Marnie has a water - type, there could be friendly battles or they could use their Pokemon's skills to overcome obstacles together. This interaction between their Pokemon and how it reflects on their relationship is really fascinating.
A possible story in this fanfic could be that they team up. Despite their differences, they realize that they can achieve more together. They could go on a journey to discover rare Pokemon or to solve a mystery in the Pokemon world. Gloria's sunny disposition might balance out Marnie's more reserved nature, creating an interesting dynamic as they travel through different regions, facing various challenges along the way.
Their relationship could develop gradually. At first, they might be a bit wary of each other. But as they encounter common foes or challenges in the Pokemon world, they start to respect one another. For instance, if they both face a powerful, rogue Pokemon trainer, they would have to work together. This would be the start of them seeing each other in a new light.
In Pokemon Marnie x Victor fanfiction, the characters are usually depicted with more depth. Writers might give Marnie more backstory, like her struggles in the Gym challenges and how Victor could support her. It can also be about their Pokemon teams interacting. For example, how Marnie's Morpeko and Victor's Starter Pokemon might get along or compete in friendly battles.
A great 'ash x marnie' fanfic should have well - developed characters. For example, it should show Ash's determination and Marnie's quiet strength in new and interesting ways. It also needs a good plot. Maybe they go on a journey to discover a new type of Pokémon together.
There's a fanfic called 'Ash and Marnie's Bond'. In this story, they start off as rivals but gradually realize they have more in common. It's a heartwarming read with great character development.
One possible plot could be their adventure in the Pokemon world. Maybe they team up to take on a powerful and mysterious Pokemon threat that's been causing chaos in the region. They start as acquaintances, gradually growing closer as they face challenges together and learn more about each other's Pokemon training styles.