A frequent theme is the clash of cultures. Since Sonic comes from his own unique world and then interacts with humans, there are differences in how things are done, beliefs, etc. Also, self - discovery is a theme. Human characters might discover new things about themselves when they are with Sonic, and Sonic may also learn new things about himself in relation to humans. For example, in some fan fictions, a human character discovers their hidden courage when facing danger with Sonic.
Shadow is often really interesting in fan fiction. His complex past and his brooding personality make for great storylines. Silver is also cool, especially when his time - traveling abilities are explored in different ways.
Sonic himself is a must - include character. After all, it's Sonic fan fiction. His speed, attitude, and sense of justice are central to any story. Tails is also a great addition. His intelligence and loyalty to Sonic can add depth to the story. And Knuckles, with his strength and his connection to the ancient ruins in the Sonic universe, can bring in an element of mystery. Dr. Eggman is another important character. His evil plans and his constant battles with Sonic are classic elements that can make the fan fiction exciting.
Amy Rose is a very popular character in sonic harem fan fiction. She has a long - standing crush on Sonic. Tails is sometimes included as well, often in a more platonic role within the harem concept. Cream the Rabbit can also be part of it. She is cute and her friendship with Sonic can be developed in interesting ways in these fan fictions.
Well, Sonic is the central figure. But other characters like Amy Rose could be important. She might be heartbroken to see Sonic turn dark and try to use her love for him to bring him back. There could also be some new characters created specifically for this fanfiction. For example, a mysterious character who has the power to either make Sonic darker or has the key to bringing him back to normal.
The main characters are probably Sonic and an alternate version of Sonic. There could also be other Sonic characters like Tails or Knuckles making appearances to support the Sonics in their rescue mission. But Sonic and his doppelganger would be at the forefront, using their speed and skills to achieve the rescue.
There could also be some new characters introduced in this fanfiction. Maybe a mysterious figure who has the power to control Dark Sonic or someone who has a connection to the origin of Dark Sonic. These new characters can bring fresh plot twists and new relationships to the story.
It depends on different perspectives. Some might consider it inappropriate as it goes against the original nature of the Sonic franchise which is mainly about action and adventure. It may also seem a bit odd to introduce such adult - like concepts into a typically family - friendly setting.
There is this fan fiction called 'Sonic in the Human World'. It's about Sonic getting stranded in a world full of only humans. He has to adapt and find a way back to his own world. The story shows Sonic's struggle and how he makes friends among the humans. It also has some really cool action scenes and character development for both Sonic and the human characters.
No. It's not acceptable. The Sonic fan community, like many other fan communities, aims to be inclusive and family - friendly. Erotic fan fiction goes against these values and is likely to be shunned by the majority of the community.