It is Adventure Time. I'll let Comics Alliance deliver the news:
Of all the sentences I’ve read in comics news this week, none have been as much of an emotional rollercoaster as this one: Ryan North is leaving the Adventure Time comic, and will be replaced as writer by Christopher Hastings.
That's right! Starting with Issue #36, out this coming January, I'm the new writer on the Adventure Time ongoing series, with art by Zachary Sterling. Ryan North's a dear friend, and I'm honored to be taking the reins from him. I am also terrified to fill his enormous shoes. Ryan's Adventure Time run is one of the finest collection of humor comics out there, (multiple awards and the ridiculous sales numbers agree) and he'll be a tough act to follow.