The following information is from the Adventure Time comic book series. It may not be part of the same canon or continuity as the animated series.

Adventure Time with Fionna and Cake: Card Wars is a six-part comic series published by BOOM! Studios. The series revolves around Fionna and Cake, the female counterparts of Finn and Jake. The story is written by Jen Wang, with art by Britt Wilson. The first issue was released on July 15, 2015.[1] Whether the comic is canon or not is unknown.

List of issues

Cover Story Backup story Release date
AT-FionnaCake-CardWars-001-A-Main-dfa01 Issue 1 TBA July 15, 2015
AT-FionnaCake-CardWars-002-A-Main-a1252 Issue 2 TBA August 19, 2015
AT-FionnaCake-CardWars-003-A-Main-c6135 Issue 3 TBA September 16, 2015
AT-FionnaCake-CardWars-004-A-Main-08ae3 Issue 4 TBA October 21, 2015
AT-FionnaCake-CardWars-005-A-Main-00ce6 Issue 5 TBA November 18, 2015
AT-FionnaCake-CardWars-006-A-Main-19d67 Issue 6 TBA December 16, 2015