It's difficult to say if there are popular 'sonic brainwashed fanfiction' works. The Sonic fanfiction community is vast, and while there may be some that touch on this theme, they might not have gained mainstream popularity. However, within the niche of Sonic fanfiction enthusiasts, there could be some well - liked ones that deal with brainwashing, but without further research, it's hard to name any.
I'm not aware of any extremely popular 'sonic brainwashed fanfiction' works specifically. There are so many Sonic fanfictions out there that it's hard to single out ones with this particular theme as being overly popular.
I'm not entirely sure specifically what 'sonic brainwashed fanfiction' is about without reading it. It could be a fan - made story within the Sonic the Hedgehog fandom where a character is brainwashed in some way. Maybe Sonic himself gets brainwashed and the story explores the consequences and how other characters deal with it.
One common plot could be Sonic being brainwashed by a powerful villain like Eggman. The villain might use some new high - tech device to control Sonic's mind. Then Sonic starts to do things that are against his friends and nature, like attacking Tails or helping Eggman steal the Chaos Emeralds. Another plot could involve an alien force brainwashing Sonic and using him to open a portal to their world for invasion purposes.
I'm not sure of any extremely popular ones off - hand. Fanfic popularity can be very niche - specific. There might be some well - known ones within certain online fanfic communities that are dedicated to gay - themed stories with elements of brainwashing, but it's not something that has mainstream popularity in the way some other types of fanfic do.
I'm not sure specifically about really popular 'brainwashed naegi fanfic' stories. There are so many fanfics out there that it can be hard to single out the popular ones in this particular niche. However, if it's a well - known character like Naegi, there might be some with a decent following within the relevant fan community.
There might be some out there. However, the popularity of a 'brainwashed undertale fanfic' can be quite subjective. Some fans might be really into this darker, more psychological take on the Undertale world and thus promote certain fanfics that involve brainwashing. But it's not as common as, say, the more typical adventure - based or friendship - focused Undertale fanfics. You could try looking at fan - recommended lists on Undertale - related forums to see if any such stories are mentioned.
Eggman is by far the most common antagonist in these fanfictions. He has the motive and the means to brainwash Sonic. He's always looking for ways to defeat Sonic and gain control over the Chaos Emeralds, so using brainwashing technology on Sonic fits right into his evil plans.
I'm not sure specifically which sonic watches fanfiction stories are extremely popular. However, usually, the ones that have unique takes on how the watches function and how they impact Sonic's adventures tend to gain more attention. For example, a story where Sonic's watch can open portals to different dimensions would be really interesting.
A third popular plot in Pokemon Ash brainwashed fanfiction is that Ash is brainwashed as part of a scientific experiment gone wrong. The story then focuses on his friends and allies in the scientific community trying to reverse the process while also dealing with the chaos that Ash's new, brainwashed state is causing in the Pokemon world.
I'm not really into that kind of fanfiction. However, such content might exist in some niche corners of the fanfiction world. But it's important to note that a lot of this might not be in line with the official Sonic the Hedgehog brand image. Also, the 'lemon' aspect often implies adult or inappropriate content which is not something that should be widely promoted.
It's hard to say. There are countless Sonic fanfictions out there. While there may be some that involve Tails hurting Sonic, they might not be mainstream popular. It could be that these types of stories are more niche, as they deviate from the typical friendly relationship between the two characters in the Sonic franchise.