In this fanfiction, it could be that Ash has a really good strategy. He might first make Gyarados use up a lot of its energy by making it attack Charmander's illusions or decoys. Then, when Gyarados is tired, Charmander can step in with its full power. Charmander could also use the environment to its advantage. Maybe there are some flammable objects around that can be set on fire by Charmander, creating a more powerful and widespread fire attack that Gyarados can't avoid.
Perhaps Charmander lost its family. In the Pokémon world, family can be important for protection and learning. Without them, Charmander would be all by itself, facing the world alone. It would be a sad situation as it might not know how to fend for itself at first.
Well, one sad Charmander story could be that it was abandoned by its trainer. Maybe the trainer caught it on a whim, but then realized they didn't have the time or resources to take care of it. So, poor Charmander was left all alone in the wild, longing for the warmth and care it once had.
Charmander can't go underwater in the manga. It's a fire-type Pok茅mon and water is its weakness. Plus, its physical characteristics and abilities don't allow for underwater survival.
In fanfiction, the relationship between Black Widow and Hydra can be very complex. Some fanfics might explore her time within Hydra, perhaps delving into how she was indoctrinated or how she managed to resist their control. It could show her as a double agent from the start, using her skills to undermine Hydra's plans from the inside.
Yes, the main characters of the novels titled " Coiling Dragon's Super Divine Beast Opening " and " Beautiful Man: The Scientist of Hydra " were both Hydra.