In a certain 'Dark Super Sonic fanfiction', Dark Super Sonic loses his memory and is found by a group of small, peaceful creatures. They don't know who he is or what his power is. As he slowly regains his memories, he has to decide whether to embrace his dark side again or try to find a new path. This story could show his internal struggle between his instinctual power and the new - found kindness he experiences with these creatures.
One interesting 'Dark Super Sonic fanfiction' story could be about Dark Super Sonic teaming up with unlikely allies to fight a greater evil that threatens not just their world but the entire multiverse. In this story, Dark Super Sonic's power is both a curse and a blessing as he has to learn to control it better to face this new threat.
A plot could be where Amy discovers a prophecy about Dark Super Sonic being the key to saving their world from a greater threat. So, she decides to follow him around and tries to understand his powers. As she does this, they form an unlikely bond. Along the way, they face various challenges together, and Amy's love for Sonic (even in his dark form) might be the driving force that helps them overcome all the difficulties.
One interesting concept could be Dark Sonic's internal struggle. In many fanfictions, he might be depicted as fighting against the dark forces within him that are trying to take over completely. This adds a layer of depth to his character.
Well, there are some fanfictions where Dark Sonic is pitted against a new, even more powerful villain. This could lead to some really intense battles and moral dilemmas for Sonic as he tries to control his dark side while fighting for good. In these stories, the author often explores the thin line between heroism and villainy within Sonic.
It could be about the exploration of Sonic's dark side within the context of the MLP world. The fanfiction might show how the characters from MLP react to this strange and powerful being. It could also be about Sonic having to face his own dark self while in the MLP world, and how that affects the relationships he forms with the ponies.
One interesting concept could be the exploration of Dark Sonic's inner turmoil. In this fanfiction, it might show how his darker side battles with his normal self. It could also delve into new powers that Dark Sonic has that we don't see in the original Sonic X.
I'm not sure specifically about super popular ones. But there might be some out there that have gained a following within the niche of fans who like both Sonic and MLP. These could be found on various fanfiction websites if you dig deep enough.
One interesting 'dark super saiyan fanfiction' could be about a super saiyan who succumbs to the dark side due to the loss of his loved ones. He then uses his newfound dark power to seek revenge on those he blames for his tragedy.
In some super dark times fanfiction, the focus could be on a side character who was overlooked in the original. This character could rise to become a key figure in the fight against the darkness, with their own unique skills and backstory adding depth to the overall narrative.
One interesting 'dark super harry fanfiction' could be one where Harry discovers a hidden, dark magic within Hogwarts that has been long forgotten. He has to navigate this newfound knowledge while also dealing with the distrust of his friends who fear the change in him.
One plot idea could be Dark Sonic having to face a new villain that is even more powerful and is threatening to destroy his world. He has to find a way to control his dark powers even more to defeat this foe.