In the 'harry shows his power fanfic', perhaps it's a story where Harry has to show his power in a wizarding competition. He might use his unique abilities like Parseltongue to outwit his opponents and prove his worth. He could also draw on his connection with the Patronus charm to protect himself and others during the tasks.
There are fanfictions where Naruto's power is shown through his ability to connect with the spirits of past Hokages. With their combined wisdom and his own strength, he's able to perform a super - powerful jutsu that not only protects Konoha but also restores the balance of the ninja world. He uses this new - found power to face an ancient evil that has been awakened.
Rimuru has the power of devouring and assimilating other beings, which gives him access to a wide variety of skills and abilities. Yuuki, in contrast, seems to have more of a strategic and manipulative power. He is good at using his intellect to outwit his opponents.
In this fanfic, Harry is the main character. However, we could also expect to see Dumbledore making an appearance. Dumbledore has always been a guiding figure for Harry, and in a story about Harry showing his power, Dumbledore might offer some wisdom or crucial information. Neville could also be a key character. He has his own growth in the original series, and in this fanfic, he could be inspired by Harry's power and contribute to the overall plot in some way.
In the light novel, Rimuru Tempest's power development is a long - term process. He starts with basic slime abilities like being able to stretch and squeeze through small spaces. But as the story progresses, he gains more complex powers. His Great Sage also evolves over time, becoming more intelligent and providing better advice. His ability to control his own evolution and choose which powers to develop further is a key aspect of his power growth. He also gains political power as he builds his own nation, which in a way is also an extension of his overall power in the world of the light novel.
Well, Naruto could show Boruto his Sage Mode power. Sage Mode gives Naruto enhanced strength, speed, and the ability to sense chakra more acutely. It's a very powerful form that Naruto has mastered over time. By revealing it to Boruto, he might be teaching Boruto about the different levels of power and the hard work required to achieve such power.
There might also be documentaries like 'The Social Dilemma' which can be considered as a form of media about power (in this case, the power of big tech companies) based on real - world concerns. It shows how these companies have power over our data, our attention, and in some ways, our lives.
Among the main characters besides Rimuru are Gobta. He is a goblin who is rather comical at times but also shows growth throughout the story. Then there is Diablo, a very powerful demon who becomes Rimuru's subordinate. His power and knowledge contribute to Rimuru's rise in the world of the novel. There are also other characters like Milim, a dragonoid with a child - like personality who has her own impact on the overall plot.
Some shows like 'Ozark' can be considered similar. It has elements that seem like they could be based on real - life financial crimes and the underworld. 'The Act' is also a good one. It was based on a true story about a mother - daughter relationship gone horribly wrong. And 'Unbelievable' is based on a true story about sexual assault investigations.