Marshall is confused when Cake calls him at one in the morning, saying that Fionna's been missing since yesterday afternoon! He thinks the adventuress can handle herself, but a disturbing blood trail in the dark and scary forest makes him start doubting his assumptions... [WARNING: contains sensitive material, violence, sexual themes and coarse language]

(AU) Simon is dead. In a world that slowly decays, in a world where Bubblegum is too blind to see what happened to her subjects, Marceline is the only one that cares. And she hardly plans to leave the death of her friend unpunished.

Fionna has a new neighbor in her apartment building. She's never met him face-to-face, and she's not sure she wants to. But when he starts performing karaoke at 2 AM for a whole week, she has no choice but to tell him to shut it. And maybe stay for a drink...

Adventure Time with Fiona and Cake/ Fiona is about to turn 18, but before she can even make it to 18 her entire life changes. A war breaks out in Aaa and she may be at the very center of it. Maybe even the cause. Fiona finds that she has to figure out what is most important to her and fast. I do not own Adventure Time or any songs in this fan fiction. Marshall X Fiona

There are consequences as the last Human, there are people willing to enforce them. Caged, beaten, broken, and on the edge of sanity, Finn was never found in Boom-Boom mountain. Is this what it means to be Human? Because no matter how hard you try, no matter how far you run, no matter what you've learned- She will be there to take your hand and pull you down harder. ART BY HNRat!

Fionna agrees to be Marshall Lee's date to the Lady of Evil's Nightosphere party in exchange for a special ingredient.

Marshall Lee X Fionna one shot. Lemon alert! "He slowly slid his fangs into Fionna's neck. She was his love, his treasure, his obsession, and his to hold forever."

19. But, then again...