Read more: 15 Must-See Horror Anime Movies, Ranked One of the coolest characters in all of "Adventure Time" is Marceline the Vampire Queen, a laid-back, guitar-strumming goth chick who drinks the ...

It's been a while since we last hung out with Finn and Jake – the dynamic duo at the heart of Cartoon Network's Adventure Time. The groundbreaking animated series ended in 2018, with BOOM!