Currently available on 2 streaming services.

Streaming, rent, or buy Adventure Time: Fionna & Cake – Season 1:

Currently you are able to watch "Adventure Time: Fionna & Cake - Season 1" streaming on Strim, Max.

Cast

Madeleine Martin
Fionna Campbell (voice)
Roz Ryan
Cake (voice)
Tom Kenny
Simon Petrikov / Ice King (voice)