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.
Well, characters like Thor, with his godly powers and Mjolnir, or Thanos with his immense strength and intelligence, might have a chance against Wanda in the comics. It often depends on the specific circumstances and plotlines.
In the light novel, there are a few powerful characters who might have a chance to defeat Rimuru, but it depends on various factors like the circumstances and their own powers.
In " Under One Person ", no one could beat the old Celestial Master for the time being. The old heavenly master Zhang Zhiwei was the sixty-fifth generation heavenly master of Mount Longhu. He was the leader of the Righteous Sect and one of the ten elders of the variant human world. His Daoist name was Tiantong and he was also recognized as the strongest in the Daoist Sect. He had displayed his formidable strength in the Heavenly Grand Ritual, defeating many variant human experts single-handedly. In the subsequent plot, although some characters displayed extraordinary strength, they were not at the level where they could defeat the old Celestial Master.
While waiting for the TV series, he could also click on the link below to read the classic original work of " The Legend of Mortal Cultivation "!
Wonder Woman is a strong contender. Her combat skills, indomitable spirit, and divine powers make her capable of taking on Thanos. Plus, her lasso of truth could potentially force Thanos to reveal weaknesses.
Pikachu would be a likely candidate. Pikachu is Ash's most loyal Pokémon and has a very strong bond with him. It would sense that Ash is in trouble and would go on a mission to rescue him. Pikachu could use its electric attacks to fight off Gary or any obstacles in the way.
Some fanfictions might have Misty betray Ash. Perhaps she gets lured by the promise of power or some valuable reward. She could be tricked into believing that Ash is no longer the friend she thought he was and that betraying him is for the greater good.
Ash might meet a strict teacher who has no idea about Pokémon at first but gradually becomes interested in them. He could also meet a rival in school who challenges him not only in academics but also in Pokémon battles.
One Inch Ash was a character from the novel " Full Time Expert." He was a pro player in the Glory Alliance and a reserve member of Team Tiny Herb. After meeting the main character, Ye Xiu, he switched to Phantom Demon and used his account, One Inch Ash, to become Ye Xiu's personal character in the tenth server and Heavenly Domain. He had a gentle personality, was polite to others, was tough and hardworking, and was soft on the outside but tough on the inside.
While waiting for the anime, you can also click on the link below to read the classic original work of " Full-time Expert "!