Adventure Time redefined what it meant to go ... But by the end of the series in Season 9's "Gumbaldia" and "Come Along With Me," he has transformed into a peace treaty-seeking mediator.

The Rookie season 7, episode 13 called "Three Billboards" will air on ABC on Tuesday April 8th at 9 p.m. E.T. and stream on Hulu the next day.