Adventure Time: Mathematical!

 is an American adventure-fantasy comic book series and a sequel to  by Pendleton Ward, being published by DC Comics since May 12th, 2020.

Synopsis
After Come Along With Me, Finn and Jake head to protect Ooo from various threats, including Hunson Abadeer, who wants to terraform Ooo into a part of the Nightosphere.

Main

 * Finn "the Human" Mertens - a friendly teenage human who is out to protect Ooo from various threats to the land's safety or prosperity.
 * Jake the Dog - TBD

Supporting

 * BMO - TBD
 * Simon Petrikov - the former Ice King who now tries to redeem himself by helping Finn and Jake to find their inner purpose while trying to find a way to bring Betty back into the TBD.
 * Lady Rainicorn - TBD
 * Princess Bonnibel "Bonnie" Bubblegum - the intelligent ruler of Ooo who is TBD.
 * Peppermint Butler - TBD
 * Marceline Abadeer - a gothic vampire who is Bonnie's love interest and TBD.
 * Huntress Wizard - a TBD huntress who Finn tries to make things with her to work as she TBD.
 * Lumpy Space Princess - TBD
 * Lemongrab 3 - TBD
 * Ice Thing - TBD
 * Phoebe the Flame Princess - TBD
 * Valkyrie Princess - the leader of a group of female warriors as she is very militant and wants the best warriors to thrive.
 * Manny the Ghost - a party-loving ghost who invited various ghosts to party inside Finn and Jake's treehouse.
 * Willie Worm - an odd worm who just wiggles around and follows nearby people.
 * Willie Worm - an odd worm who just wiggles around and follows nearby people.

Antagonists

 * Hunson Abadeer - the king of the Nightosphere who plots to turn all TBD.
 * The Flare Demon - a massive flaming demon who is out for chaos and destruction.
 * Dr. Apex - Dr. Gross' former partner who is obsessed with fusing humans with animals.
 * ZMO - a MO designed made by someone of zero sanity who wants to destroy every single MO and is vicious.
 * The Ferryman of Death - a ferryman who attempts to lead his victims to their dooms.
 * The Silk King - a giant intelligent spider whose silk is capable of curing a dangerous poison and lives in a dark and dangerous cave.
 * Crimson - a vicious female mercenary who can summon red mist out of her hands.
 * Crimson - a vicious female mercenary who can summon red mist out of her hands.

Issues

 * 1) /Finn and Jake/ - After GOLB's defeat, Finn and Jake are having fun in Ooo until a returning Hunson Abadeer plots to terraform Ooo into a part of the Nightosphere.
 * 2) Fire and Hunts - Finn reunites with Flame Princess when he and Huntress Wizard are hunting after a burning monster as Huntress and Phoebe have to deal with their contrasting personalities.
 * TBD
 * 1) /Simon Alone/ - Simon after searching for a way to bring back Betty, gains an important lead, which is inside a dark and desolate jungle.
 * 2) The Sword of Doom - Finn discovers a strange new sword as it is slowly draining his life, forcing Jake to try to save him.
 * TBD
 * 1) /Ghost Party/ - Finn and Jake find a ghost who wandered into the treehouse, but things get awry when the ghost invites his friends over and starts having a huge party inside.
 * 2) /Thundersword/ - Finn hears legends of a sword that can control lighting himself as he goes on an adventure to find the sword in order to find a way to defeat Hunson.
 * 3) Farmer Jake - Jake the Dog decides to take farming as a hobby as soon a bunch of animals try to steal his crops.
 * 4) At World's Edge - Finn discovers the edge of Ooo as he attempts to discover what truly hides there.
 * TBD
 * 1) Marceline of the Valkyries - While adventuring with Finn and Jake, Marceline finds a small island and meets a group of warriors named Valkyries as she decides to train under them as she faces three trials to prove her worth as a Valkyrie.
 * 2) /The Worm/ - Finn and Jake encounter a strange worm who calls himself Willie Worm as he constantly starts following them around, annoying them.
 * TBD
 * TBD
 * 1) /The Ferryman of Death/ - A ferryman has been around, attempting to lead many people to their doom, so Finn and Jake decide to stop him... but it is proven to be hard.
 * TBD
 * TBD
 * TBD