<P> The concept of Fionna and Cake was based on sketches that series ' character designer and storyboard revisionist Natasha Allegri made . Ward was pleased with her creations , and decided to canonize them . Originally , the episode did not feature the Ice Queen at all , and the middle part of the episode saw Fionna go on a date with Gumball to a restaurant ; this subsequently changed . The episode was watched by 3.315 million people , making it -- at the time -- the most - watched episode of the series . `` Fionna and Cake '' received largely positive reviews from fans and critics alike . Two sequels to the episode -- `` Bad Little Boy '' and `` The Prince Who Wanted Everything '' -- were produced during the show 's fifth and sixth season , respectively . </P>
what episodes of adventure time are fionna and cake in
Fionna and Cake Bad Little Boy The Prince Who Wanted Everything