Definitely Finn and Jake. But also Princess Bubblegum and Marceline. They are important characters and their stories are intertwined with Finn and Jake's. Their relationships will probably be further explored in the final story.
I think the main characters will be Finn, Jake, Princess Bubblegum, Marceline, and Ice King. Finn and Jake are the protagonists, Princess Bubblegum rules the Candy Kingdom which is a central location, Marceline has a complex backstory and relationship with the others, and Ice King has been a recurring and evolving character throughout the series, so they all need to be in the final story to give it a proper conclusion.
Finn and Jake are bound to be main features. They've been at the heart of the series all along.
Finn is definitely one of the main characters. In Farmworld, he has a different life compared to the regular Adventure Time universe, and fanfictions often explore his new experiences, like being a farmer and a father.
Princess Bubblegum also frequently appears. Her scientific knowledge and leadership in the Candy Kingdom can be useful in dealing with the mysteries that knots might bring. For example, if a knot is causing some sort of chaos in the kingdom, she would be there to analyze and try to solve it.
Finn and Jake are often the main characters in 'Adventure Time Family Fanfic'. They are the core of their little family unit in the show, so it makes sense for them to be central in fanfics too. Their friendship and brother - like bond is a great foundation for family - centered stories.
Princess Bubblegum can also be a main character. Given her scientific mind, she could be researching something in the canyon, like unique plant life or strange geological formations. So, in many fanfics, she plays an important role in the canyon - related adventures.
Finn and Jake are often the main characters in Adventure Time Canyon fanfiction. They are the protagonists of the original show and their adventures are always exciting to write about in the context of the canyon.
Finn and Jake are often in these fanfictions. They are the main protagonists in Adventure Time, so it makes sense that they'd be involved when it comes to Golb. They're always up for an adventure and facing a big threat like Golb is right up their alley.
The main characters in the 'Spider Man Complete Story' would be Spider - Man (Peter Parker) without a doubt. His enemies are also important characters in the story. Venom is one of the most iconic villains and is likely to be in it. And then there are the supporting characters like J. Jonah Jameson, the editor - in - chief of the Daily Bugle. He often causes trouble for Peter Parker. Also, Gwen Stacy, another love interest of Peter's, is likely to be part of this complete story.
Finn and Jake are obvious choices. Finn's brave and adventurous nature would make him a great character to explore the Jungle School's mysteries. Jake's shape - shifting ability could come in handy during various situations at school, like sneaking into restricted areas or helping in physical challenges.
Finn is often a main character in such fanfictions. Since he is the protagonist in the original 'Adventure Time', it's natural for writers to explore different scenarios involving him, like unexpected weight gain and how he copes with it.
Obviously Finn himself. Since it's about him being godlike, he's the central figure. And of course, Jake his best friend is likely to be involved. Jake would probably be there to support Finn, or maybe try to keep his new powers in check if they start to get out of hand.