One great theme is their friendship adventures. Stories that focus on their new quests and how they support each other through different challenges are always interesting. Another theme could be how they grow together as characters over time.
Adventure is a very common theme. Finn and Jake are known for their adventures in the original show, and fan fictions often continue this trend, sending them on new quests.
Finn might initially go into denial. He could keep expecting Jake to just pop back up like he always does. Then he'd probably get angry, at himself or at whatever caused Jake's death. Eventually, he'd start to accept it and try to honor Jake's memory by being a better hero.
Well, Tumblr is also a great place to search for Finn x Jake fanfic. There are many fanfic writers who post their works there, and you can also find fan communities that might recommend some great pieces. Just use the search function and type in 'Finn x Jake fanfic' and you'll likely get some interesting results.
No, they didn't. Finn and Jake's relationship in the cartoon was strictly platonic and friendly.
The comic featuring Finn and Jake usually involves their adventures in a fantasy world filled with magic and strange creatures.
They are close friends and have many adventures together.
It's quite exciting and full of fun adventures. The characters are really engaging.
The adventures involve facing various challenges, exploring new lands and having fun along the way.
Friendship is a very common theme. Finn and Poe have a strong bond in the movies, and fanfics often explore and expand on that relationship. They might show how they rely on each other in tough times.
Friendship is a very common theme. Finn and Bubblegum often rely on each other in these fanfics, just like in the original show. Another common theme is adventure. They go on all sorts of quests together.