Well, Sherlock himself is always a main character, whether he's depicted as a cat, dog or some other animal. Another common main character could be Dr. Watson, often reimagined as an animal too. For example, if Sherlock is a wolf, Watson might be a deer, acting as Sherlock's sidekick and chronicler of his adventures.
In many 'animal sherlock fanfic', Moriarty is also a significant character. If Sherlock is a bird, Moriarty could be a snake, representing the ultimate antagonist. There are also often local animal characters like the mayor of the animal town, who might be a wise old tortoise, and the police chief, perhaps a strong - willed bear. These characters play important roles in the story, either helping or hindering Sherlock's investigations.
Often, there are sidekick characters like Mrs. Hudson, who in an 'animal sherlock fanfic' could be a motherly hen. She provides a place for Sherlock to stay and gives him valuable local information. And then there are the street - smart animals, like a street - urchin mouse who might bring Sherlock the first clue about a mystery, setting the whole investigation in motion.
In most 'rosekiller fanfic', you'll find the rose character, which could be a person with a gentle and kind nature. And then there's the killer. They can be a morally ambiguous figure, sometimes with a tragic backstory that led them to their current state. For example, in some fanfics, the killer was once a victim of a great injustice and that's what shaped them into what they are now. The relationship between these two is what drives the story forward.
Wolves can also be common characters. A pack of wolves has a clear hierarchy, with an alpha wolf as the dominant one. Their stories can show cooperation and competition within the pack for dominance.
The main characters in 'animal avengers fanfic' might be a wolf with enhanced speed and senses, acting as a tracker. A parrot with the ability to mimic any sound could be useful for communication and deception. And a tortoise with a hard shell for protection and maybe some slow - time related power. They all come together to fight against threats to their animal - inhabited world.
The main character is obviously the kaiju girl. There might also be other characters like her friends who support her in her adventures. And of course, there could be antagonists such as evil kaiju controllers or other humans who oppose the kaiju girl's goals.
Often, Naruto himself is a main character. Since it's a Naruto - related fanfic, he's usually central to the story. Another character could be one who wields the Senbonzakura power, perhaps a new character created specifically for the fanfic. There might also be his friends like Sasuke or Sakura who get involved in the story due to their connection with Naruto.
Obviously, Naruto is usually one of the main characters. And Fujin, of course. In many cases, Sasuke might also be involved as he is an important part of the Naruto universe. His rivalry or friendship with Naruto can add more depth to the story in the fanfic.
Catwoman also sometimes makes an appearance in 'batman the shadow fanfic'. She adds an element of intrigue and her own brand of thievery to the mix. Her relationship with Batman can get even more complex when The Shadow is in the picture. And then there are the usual villains like The Joker or Two - Face. Their actions can be the catalyst for the interactions between Batman and The Shadow, as both heroes try to stop them.
Well, obviously Cheetor is the main character. He's the one with the Transmetal 2 form that the fanfic is centered around.
A typical animal cartoon story might have a mouse as a main character. Mice are small but brave and resourceful in these stories. There could also be a deer. Deer are often shown as gentle and graceful. And don't forget about squirrels. Squirrels are known for their busyness, always collecting nuts and being very energetic in the cartoon stories.
In a 'lemon animal fanfic', the main characters might be a family of lemon - colored bunnies. The mother bunny is very protective, the father bunny is brave and goes out to find food, and the baby bunnies are curious and always getting into trouble. They live in a burrow at the edge of a meadow and interact with other animals like birds and squirrels.