Adventure Time Comics #17
Publisher: KaBOOM!, an imprint of  BOOM! Studios
Writers: Jeffrey Brown, Michael Moreci, Pat Shand, Derek Laufman
Artists:  Jeffrey Brown, Christopher Mitten, Spencer Amundson, Derek Laufman
Colorist: Eleonora Bruni, Joana Lafuente
Letterer: Warren Montgomery, Jim Campbell
Cover Artists:
     Main Cover: Cole Closser
     Subscription Cover: Benjamin Marra
     Variant Cover: Christopher Mitten
Synopsis: Birthdays are celebrated, Marceline gets lumpy, and an underground city is revealed!