gengar meets his old trainer

Well, there are several common themes. First, there's the theme of acceptance. Ash has to accept Gengar, even though it might be a bit of an odd or scary Pokémon at first. Second, the idea of transformation. Gengar could transform Ash's view of the world of Pokémon, showing him new perspectives. And third, the theme of cooperation. They often end up working together, whether it's to defeat a powerful enemy or to achieve a common goal in the Pokémon universe. This cooperation can be both in battles and in non - battle related situations, like finding a lost Pokémon or exploring an ancient ruin.

There are quite a few 'Ash meets a Gengar' fanfictions out there. One type you might come across is where Gengar plays pranks on Ash and his friends, leading to some comical situations. Another could be a more serious take, like Gengar being a key to solving a mystery in the Pokémon world that Ash gets involved in. It really depends on the creativity of the authors.

Their character could be developed by showing how they interact with other characters in the fanfiction. If they meet new trainers or Pokemon, how do they respond? Do they share their experiences with Snivy? Their reactions to different situations can shape their character. For example, if they see a Snivy in trouble and they try to help because it reminds them of their own Snivy, it shows their kind side.

Well, in such a fanfiction, there could be a lot of self - discovery. Maybe the old Merlin gives advice to his younger self. For example, he could tell the younger Merlin about future challenges and how to avoid some big mistakes.

Gengar is a Pokémon. It was once a Haunter. In the Pokémon lore, it is said that Gengar was born from the shadow of a person. It lurks in the darkness and often plays tricks on people. It has a mischievous nature and uses its ghostly abilities to startle or confuse its victims.

There was a forest known for its strange happenings. A group of hikers decided to explore it. As night fell, they set up camp. One of the hikers saw a strange shadow that looked like Gengar. They thought it was just their imagination at first. But then, Gengar started to make eerie noises. It began to play tricks on them, moving their supplies around. The hikers were terrified and quickly tried to leave the forest, but Gengar followed them, disappearing and reappearing to keep them on edge.

Well, perhaps Gengar's sad story involves it being shunned by other Pokémon in its original form. It might have been a misunderstood Pokémon that was always thought to be evil. So, it had to endure the loneliness of not having any friends. It was constantly chased away and had to hide in the shadows, which led to its transformation into Gengar, a more menacing form, but still with a sad heart.

The old Merlin might be very protective of his younger self. He could see all the potential and the mistakes that lie ahead for the younger one. So, he would probably start by warning the younger Merlin about certain people or situations.

Maybe Tracey. He was also an acquaintance of Ash. Since Tracey has his own unique skills and knowledge about Pokemon, his presence could bring new elements to the story. He could help Ash and other friends with things like Pokemon research or understanding some rare Pokemon behaviors.

The humor often comes from Gengar's mischievous pranks and unexpected reactions.