Suggestions by @schrodingershat

Finn Wolfhard

as Mason Pines in Disney's Gravity Falls Returns (Live Action)

+1-0Score: +1

Hayley Kiyoko

as Wendy Corduroy in Gravity Falls

+2-2Score: 0

Sydney Sweeney

as Pacifica Northwest in Gravity Falls

+0-5Score: -5

Jodie Foster

as River Song in What If Doctor Who Was American?

+3-2Score: +1

Elle Fanning

as Amy Pond in What If Doctor Who Was American?

+2-4Score: -2