Dream Cast For A Live-Action "Adventure Time" Movi

As Princess Bubblegum. This character is brainy like Hermione Granger from the "Harry Potter" movies, which is Emma Watson's most well-known role. Emma is also really pretty like Princess Bubblegum, and is a very talented actress, so she would be appropriate for this major role.

As Marceline Abadeer. Naya Rivera can easily play a tomboy role like Marceline, and has a very good singing voice like her. She also has long black hair like Marceline has.

As the Ice King. Robin Williams is a versatile actor who has played both comedic and dramatic roles very well. He would be able to play both the ridiculous side of the Ice King, and also the sympathetic side.

As Hunson Abadeer.

As Fionna.

As Marshall Lee.

As the Ice Queen.

As Magic Man.

As Shoko. I believe she is the voice actress for her on the show anyway, so it makes sense. I don't know much about this character since I haven't seen every episode of the show.

As Lemongrab.

As Peppermint Butler.

As Betty.