One of the most powerful characters is Superman. He has super strength, can fly, and has heat vision. He can move planets and withstand extreme forces.
Madara Uchiha was also very powerful. His mastery over the Sharingan, his grand plans and his combat skills made him a major threat throughout the series.
In the world of fiction, Sauron from 'The Lord of the Rings' is extremely powerful. He commands vast armies and his evil magic is so strong that it can spread across Middle - earth, causing destruction and fear. His very presence can sway the balance of power in the land.
The most powerful characters often have unique abilities or powers that set them apart. For example, Jean Grey as the Phoenix in X - Men has telepathic and telekinetic powers on a cosmic level. Her Phoenix Force gives her the power of creation and destruction, allowing her to reshape reality.
There might be a mysterious character who only appears at the end of the road and has some special powers or knowledge. This kind of character tends to be quite memorable because they add an element of mystery and intrigue. Also, characters with a great sense of humor can be memorable, even in a somewhat serious story like 'at the end of the road manhwa fanfic', as they can lighten the mood and make the story more engaging.
Arya Stark is another favorite. Her skills as an assassin and her desire for revenge can be further explored in fanfic. For example, in a manhwa fanfic, she could have adventures in new lands while still on her path of vengeance.
In the world of fiction, Harry Potter can be considered a powerful character. He has strong magical abilities and the courage to face the Dark Lord. Also, Katniss Everdeen from 'The Hunger Games' is powerful. She has great archery skills and the will to survive and fight against the Capitol. Moreover, Sherlock Holmes is powerful in his own way. His extraordinary deductive reasoning skills enable him to solve the most complex cases.
Another extremely powerful character is Doctor Strange. He is a master of the mystic arts. He can manipulate time, space, and dimensions. He has faced off against some of the most powerful threats in the Marvel universe with his vast magical abilities.