Adventure Time by Pendleton Ward (2013)
"When Finn breaks a promise he doesn't even remember making, he finds himself on a quest through time as it unravels around him. Travel through Finn's past, present, and future--all that was and what could have been--as he faces down the fearsome Chronologius Rex. Meanwhile, Jake enlists the help of all of Ooo to get his best bud back before it's too late."--