Suggestions by @the_advanced_caster

Ella Purnell

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Kaitlyn Dever

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Laura Marano

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Thomasin McKenzie

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Bailee Madison

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Dove Cameron

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Joey King

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Mackenzie Foy

as Heather Duke in Heathers (Advanced Casting)

Score: +1

Jake Short

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Curran Walters

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Chandler Riggs

as Jason Dean in Heathers (Advanced Casting)

Score: 0

Corey Fogelmanis

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Judah Lewis

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Zachary Gordon

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Froy Gutierrez

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Mitchell Hope

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Tye Sheridan

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Joshua Bassett

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Tanner Buchanan

as Jason Dean in Heathers (Advanced Casting)

Score: +1

Charlie Heaton

as Jason Dean in Heathers (Advanced Casting)

Score: +1