Yes, there are quite a few out there. You can start by looking on popular Minecraft fanfic websites. Some might focus on their unlikely friendship, while others could create an adventure where they team up against common enemies in the Minecraft world.
The Enderman is usually a solitary and somewhat mysterious mob. It might be initially wary of the Creeper. The Creeper, on the other hand, is known for being a bit more impulsive because of its explosive nature. So the Enderman might be constantly on guard around the Creeper, while the Creeper might not fully understand why the Enderman is so standoffish.
The Enderman could be presented as a rather solitary creature at first, not used to interacting with others. But as it spends more time with the Creeper, it starts to open up and show more emotions. It might start to show concern for the Creeper's well - being. The Creeper's personality could be based on its instinct to protect. In the fanfiction, it could be that the Creeper sees the Enderman as something to protect, and this protective nature grows as their relationship deepens. Maybe the Creeper will start to be more strategic in its explosions to keep the Enderman safe from threats.
Well, perhaps there's a strange magic in the Minecraft world that starts to make the Enderman and the Creeper swap some of their abilities. This causes chaos as the Creeper starts teleporting randomly and the Enderman has to be careful not to explode. They have to work together to find a way to reverse the magic. In this process, they learn more about each other's lives and how difficult it is to be the other. They also meet other mobs who react in different and often comical ways to their changed states, adding more elements to the story.
One idea could be that the Enderman and Creeper form an unlikely alliance. The Enderman could use its teleporting ability to move the Creeper around the Minecraft world to strategic locations where they can both fend off other mobs. For example, they could work together to protect a village from a horde of zombies. The Creeper could explode to take out large groups, while the Enderman teleports in to pick off any stragglers.
Fanfics about 'creeper x enderman' are really interesting. In these stories, the author might take advantage of the distinct features of both mobs. The creeper, known for its explosive nature, and the enderman, with its teleportation ability and tall, lanky build. They could be brought together by some kind of a quest in the Minecraft universe. Maybe they are forced to team up to defeat a common enemy, like a powerful wither boss. Or it could be a story about how they misunderstand each other at first due to their different behaviors, but then gradually come to understand and form a bond.
One possible plot could be that the Creeper, known for its explosive nature, accidentally scares the Enderman. But then they discover they both feel like outcasts in the Minecraft world. So they form an unlikely friendship and go on adventures together, exploring different biomes and facing common enemies like skeletons.
Their relationship could be portrayed as a mentor - mentee one. The older and more experienced Enderman could teach the Creeper about the secrets of the Minecraft world, like hidden portals or rare items.
A plot could revolve around an Enderman getting injured near a Creeper's lair. The Creeper, instead of attacking, decides to help the Enderman heal. This act of kindness starts a friendship that then grows into a unique partnership as they face various challenges in their Minecraft environment.
There's a story called 'Shadows and Explosions' which delves into how their different natures, the Enderman's teleportation and the Creeper's explosive ability, play into their relationship. It's a quite creative take on their yaoi relationship.