Sonic has a fever fanfiction: Who could be the main character(s) in it other than Sonic?

Well, it could be about Sonic's friends trying to take care of him while he has a fever. Maybe Tails uses his gadgets to monitor Sonic's condition and Knuckles brings some special herbs that are supposed to help with fevers in their world. And Amy could be fussing over Sonic, making him soup or something.

There might be a wise old grandfather in Sonic's family. He could be the one who knows all the family secrets and ancient techniques. And there could also be some younger siblings, like a little brother or sister who looks up to Sonic and wants to be just like him. They could all have different personalities, for example, the older sister could be really strict but also very protective, while the younger siblings could be full of energy and curiosity.

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.

One possible main antagonist could be Dr. Robotnik's sister, who is even more devious and has a different set of robotic creations. She could be jealous of Sonic's speed and popularity and wants to take over the world just like her brother, but with her own style.

It could be one of Sonic's old enemies who found a way to transform into him. Maybe Dr. Eggman created a sophisticated robot that looks and acts like Sonic.

It depends on the specific fanfiction. In some versions, Sonic might have a brother or sister that the creator has made up for the story. It could be a super - fast sibling like Sonic himself, or one with a different but equally cool power.

A new character could be introduced as the main antagonist. For example, a being from another dimension who has been observing both Sonic's and Megaman's worlds. This being realizes that by combining the chaos energy from Sonic's world and the advanced robotics technology from Megaman's world, it can create a new, all - powerful empire. So it starts to manipulate events in both worlds to bring about this combination, while Sonic and Megaman have to stop it.

Dr. Eggman and Dr. Wily could team up. Dr. Eggman has his mechanical creations and knowledge of Sonic's world, while Dr. Wily is an expert in creating powerful robots in Mega Man's world. Together, they could be a formidable force against Sonic and Mega Man.