⚠️ PRE-ORDER — NOT YET RELEASED ⚠️

ESTIMATED RELEASE: DEC 22, 2026

THIS ITEM DOES NOT SHIP TODAY. It ships once the publisher releases it and it arrives in store. Release dates can move.

ORDERS SHIP COMPLETE. If you order a pre-order item together with in-stock items, the whole order ships once every item has arrived.

Have you ever wondered what makes a true hero? Find out with Finn and Jake as they journey across Ooo to create their own HANDBOOK FOR HEROES!With the Enchiridion, the famed guide for adventurers, seemingly gone for good, Finn and Jake set out to make a totally new, totally mathematical version—but how are they supposed to make a handbook for heroes when one of their own is seemingly . . . a villain?! With a metal doppelgänger that looks remarkably Finn-like causing chaos across Ooo—stealing baby blankets, ruining cookouts, making crushes a total bummer—the real Finn will have to come face-to-face with his own insecurities in order to save the day! Elsewhere, Marceline decides it’s time to help Ice King face the music of his past in order to help Ooo’s future—but what’s an Ice King without his crown?!Written by Annie-nominated designer for TV Nick Winn (Bloody Mary) and drawn by a host of stellar artists—including Austin Baechle (Sesame Street), Corinth Boone (Peony), Agustin Morales (Adventure Time, Go Go Proton, Megahrtz), and Chelsea Akpan (Lovefool!)—and collecting the entirety of the short “Lemonhope, Alone*” by writer Elizabeth Brei and artist Cleonique Hilsaca, this is one collection you won’t want to miss!Collects Adventure Time (2025) #9–12! Adventure Time Vol. 3: Handbook Heroes!. Softcover collected edition. New and unread. Published by Oni Press. Written by Nick Winn. Interior art by Austin Baechle.