One candidate could be Carlisle Cullen. As the patriarch of the Cullen family, he has a great deal of influence. He is respected by both vampires and humans to some extent. His moral code and leadership skills make him a sort of master in the Twilight fanfiction world. He is able to keep his family in line and also make decisions that impact the relationship between vampires and the outside world.
In Twilight fanfiction, the 'Master of the Universe' concept can be portrayed in various ways. Sometimes, it could be a character who has extraordinary powers and is in control of their own little world within the Twilight universe. For example, a vampire with unique abilities might be seen as a master of their domain, ruling over other vampires or having a major influence on the events in the story.
Yes, there are likely some 'master of the universe' Twilight fanfics available online. Fanfic websites like Archive of Our Own (AO3) and FanFiction.net host a vast range of fan - created stories, including those that combine different concepts like 'master of the universe' with Twilight. However, the quality and content can vary greatly from one fanfic to another.
It could be about a character from Twilight, perhaps Edward or Bella, becoming a master of the universe. They might gain some sort of all - powerful abilities and have to deal with the consequences. For example, if Edward became a master of the universe, he'd have to balance his new power with his vampiric nature and his relationship with Bella.
There could be a story where the Rescue Ink characters somehow find themselves in the Twilight world. Maybe they are there to rescue a character from some sort of danger, like a werewolf attack or a vampire's scheme. It would be an interesting crossover as the tough Rescue Ink guys deal with the supernatural elements of Twilight.
The imprint between Jacob and Leah can also change the relationships with other characters. For Bella, it might mean a different kind of friendship or interaction. Since Jacob was so involved with Bella before, this new development could shift the way Bella views Jacob and his place in her life. Also, it could affect how the Cullens view the wolves. If Jacob and Leah become a strong unit through the imprint, they might pose a different kind of threat or ally to the Cullens.
In Twilight fanfiction, the idea of Harry having 13 siblings might be a way to create a more complex family dynamic. It could be that there was some sort of supernatural event that led to so many siblings. For example, a vampire or a werewolf could have been involved in the family's past, causing an abnormal number of offspring. Or perhaps it's a new take on the idea of a large family in the Twilight world, where Harry's family is an outlier compared to the normal vampire or human families in the series.
A happy family in the Twilight fanfiction could start with a human family that moves to Forks. They befriend the Cullens without knowing their true nature at first. The family has a daughter who is intrigued by the Cullens' mysterious ways. As time passes, they discover the truth but instead of being afraid, they embrace the Cullens. The two families start to have joint activities like picnics in the forest. The Cullens protect the human family from other threats in the Twilight world, and the human family provides the Cullens with a sense of normalcy and warmth that they have always longed for. Their bond grows stronger as they face challenges together, and they become a unique happy family in the Twilight setting.
Well, a very common theme is power dynamics. In the alternate universes, the power balance between the vampires, werewolves, and humans can be completely different. For instance, there could be a world where humans have developed a way to control vampires. Another theme that often shows up is the exploration of different timelines. This can lead to different outcomes for the characters. It might be that Bella never moves to Forks in one timeline, which then changes everything we know about the story. There are also fanfictions that focus on the moral aspects of being a vampire or werewolf in a new and different context.
Another idea for the fanfiction is that the Twilight characters start receiving mysterious packages through the 'Signed Sealed Delivered' service. Bella could get a package that has some old family heirlooms from her mother's side that are linked to a hidden vampire past in her family. This could lead to a whole new adventure for her and Edward as they try to uncover the secrets of the items.