Shego and Kim as unlikely allies could mean that they are brought together by fate. Perhaps a powerful artifact is about to be misused, and they are the only two who know how to stop it. Their initial meetings would be full of tension, but as they start to understand each other's motives, they form a tentative bond.
A Batman x Atwoman fanfic could also focus on the emotional side of their relationship. Imagine Atwoman has a personal vendetta against a particular villain. Batman initially doesn't understand why she is so obsessed. But as he gets to know her story, he realizes that it's similar to his own quest for justice. This understanding brings them closer. They start to share their feelings and fears, and this newfound emotional bond helps them become even stronger allies when facing the challenges in their cities, whether it's fighting gangs or stopping mad scientists.
In this fanfic, Agumon might be a loner Digimon who is used to fighting on his own. Biyomon, on the other hand, is more community - oriented. When they first meet, they don't get along. But as the threat grows, they start to see the value in each other. Agumon learns about the importance of teamwork from Biyomon, and Biyomon learns to be more assertive from Agumon. Their partnership evolves over time as they face different challenges together.
One of the main themes is the relationship between good and evil. Kim represents good and Shego represents evil, and the fanfics often explore how their interactions can blur the lines between the two. For example, in some stories, Shego might show a softer side that makes Kim question her own view of villains.
I'm not sure if there is a specific fanfic with this exact combination. You could try searching on major fanfic websites like Archive of Our Own or FanFiction.net.
One great 'kim x shego fanfic' could be 'The Unlikely Alliance'. It explores a unique situation where Kim and Shego have to team up for a common goal, and in the process, their relationship takes an interesting turn. Another one is 'Shego's Redemption'. This fanfic delves into Shego's character more deeply, showing her softer side as she interacts with Kim.
They could be unlikely allies. Maybe in a world where the Pokémon ecosystem is out of balance, Arceus, the symbol of order, teams up with Silvally, a Pokémon with a complex past. Together, they might restore balance, with Arceus guiding Silvally's actions and Silvally using its strength to carry out Arceus's plans.
One possible scenario in a Shego and Kim fanfic could be that they are forced to team up against a common enemy. Maybe a new villain emerges who has a power that can only be countered by the combined skills of Shego and Kim. They start off hesitant to work together, but as they face challenges, they begin to respect each other's abilities more.
Bayleef and Latias make for an interesting pair in a fanfic. They could start as unlikely allies. Maybe Bayleef is initially afraid of Latias because of her dragon - like appearance and psychic powers. But as they are forced to work together to solve a mystery in their Pokemon world, like the disappearance of a certain type of Pokemon, they gradually start to trust each other.
The potential for unique storylines. Maybe they team up against a common enemy, or there's some sort of strange situation that forces them to work together. Fanfic writers can get really creative with the 'what - ifs' in this relationship. For example, what if there was a spell that made Kim and Shego swap powers or bodies? That could lead to all kinds of interesting plot twists and character development.
Another theme is friendship or the potential for it. Despite their differences, many fanfics show Kim and Shego developing a bond that goes beyond their initial enmity. This can involve themes of loyalty and understanding.