Suggestions by @sleepspell

Camila Mendes

as Marceline in Adventure Time(story private)

Score: +1

Anya Taylor-Joy

as Marceline in Adventure Time(story private)

Score: +1

Leo Flanagan

as Flame Prince in Adventure Time(story private)

Score: +1

Harry Kirton

as Flame Prince in Adventure Time(story private)

Score: +1

Ben Carolan

as Flame Prince in Adventure Time(story private)

Score: +1

Xolo Maridueña

as Marshall Lee in Adventure Time(story private)

Score: +1

Avi Lake

as Princess Bubblegum in Adventure Time(story private)

Score: +1

Kennedy Lea Slocum

as Flame Princess in Adventure Time(story private)

Score: +1

Emily Skinner

as Fionna in Adventure Time(story private)

Score: +1

Elsie Fisher

as Fionna in Adventure Time(story private)

Score: +1

Malina Weissman

as Princess Bubblegum in Adventure Time(story private)

Score: +1

Mitchell Hope

as Prince Gumball in Adventure Time(story private)

Score: +1

Amber Midthunder

as Marceline in Adventure Time(story private)

Score: +1

Finn Wolfhard

as Marshall Lee in Adventure Time(story private)

Score: +1

Ellie Bamber

as Flame Princess in Adventure Time(story private)

Score: +1

Steve Carell

as Ice King in Adventure Time(story private)

Score: +1

Chloë Grace Moretz

as Fionna in Adventure Time(story private)

Score: +1

Sadie Sink

as Flame Princess in Adventure Time(story private)

Score: +1

Gana Bayarsaikhan

as East Asian (F) in Face Claims(story private)

Score: +2