It follows the adventures of Finn, a human boy, and his best friend and adoptive brother Jake, a dog with magical powers to change shape and size at will.

Tom Herpich, Steve Wolfhard, Jesse Moynihan, Laura Knetzger, Kris Mukai, Lyle Partridge, Graham Falk, Charmaine Verhagen, Sam Alden, Pendleton Ward, Seo Kim, Somvilay Xayaphone, Hanna K. Nyström, Ako Castuera, Aleks Sennwald, Polly Guo, Kent Osborne, and Adam Muto storyboarded and wrote the season.

Club writer Oliver Sava expressing pleasant bemusement that the show's quality had not suffered despite this season being its eighth.

Common storylines revolve around Finn and Jake discovering strange creatures, dealing with the antagonistic, but misunderstood, Ice King, and battling monsters in order to help others.

[1] Multi-episode story arcs for this season include the introduction of the character Fern,[2] and Finn meeting his mother and learning about what became of humanity.

[4] The season's storyline writers included Jack Pendarvis, Adam Muto, Kent Osborne, and Ashly Burch.

[19] Storyboard artists who worked on this season include: Tom Herpich, Steve Wolfhard, Jesse Moynihan, Laura Knetzger, Kris Mukai, Lyle Partridge, Graham Falk, Charmaine Verhagen, Sam Alden, Pendleton Ward, Seo Kim, Somvilay Xayaphone, Hanna K. Nyström, Ako Castuera, Aleks Sennwald, Polly Guo, Kent Osborne, and Adam Muto.

[20][21][22] Finally, supervising director Andres Salaff left after this season to storyboard on Cartoon Network's series Uncle Grandpa.

The voyage culminates with a trip to Founder's Island, where Finn learns what happened to the rest of the human race and meets his mother, Minerva (voiced by Sharon Horgan).

[30] The season's voice actors include: Jeremy Shada (Finn the Human), John DiMaggio (Jake the Dog), Tom Kenny (The Ice King), Hynden Walch (Princess Bubblegum), and Olivia Olson (Marceline the Vampire Queen).

Former storyboard artist Niki Yang voices the sentient video game console BMO in English, as well as Jake's girlfriend Lady Rainicorn in Korean.

"[40] In addition to the regular cast members, episodes feature guest voices from a range of professions, including actors, musicians, and artists.

In the season opener "Broke His Crown", both Lena Dunham and Pamela Adlon reprise their characters Betty and Gunter the dinosaur.

[41] Dan Mintz, Henry Rollins, and Laura Silverman return to reprise their roles as T.V., Bob, and Ethel in "Lady Rainicorn of the Crystal Dimension".

This episode also features former storyboard artist Bert Youn and comedian Fred Stoller voicing the rainicorns Lee and Roy.

[46] "Five Short Tables" sees the return of Madeleine Martin, Roz Ryan, Donald Glover, Grey DeLisle, and Emo Philips; they voice Fionna, Cake, Marshall Lee, Ice Queen, and Cuber.

[52][53] "Preboot" sees the return of Buscarino as Susan Strong and Collin Dean as Tiffany; the episode also introduces Lennon Parham as Dr.

[57] In "Wheels", Marc Evan Jackson reprises his role as Kim Kil Whan, and Rae Gray guest stars as Jake's granddaughter, Bronwyn.

[61] The Islands miniseries features Josh Fadem as Whipple the sea-dragon, Helena Mattsson as Alva, Reggie Watts as Vinny, Jasika Nicole as Frieda, Livvy Stubenrauch as young Kara/Susan, Sharon Horgan as Finn's mother Minerva, and Laraine Newman as the Widow.

Club writer Oliver Sava wrote, "I love that after seven seasons the show hasn't lost sight of what makes it so compelling to such a wide audience.

Club did not review "Daddy-Daughter Card Wars" because episodic coverage of the series was intended to stop following the airing of "The Music Hole".

[78][79][80] Zach Blumenfeld of Paste Magazine complimented the miniseries' philosophical musings, which he argued "takes on shades of Black Mirror and existentialism to cast a critical eye on technology and the human spirit.