Suggestions by @jasoncrawford

Lia McHugh

as Velma Dinkley in Actors & Actresses As Characters In Live Action

Score: +2

Beatrice Kitsos

as Daphne Blake in Actors & Actresses As Characters In Live Action

Score: +2

Maxwell Jenkins

as Fred Jones in Actors & Actresses As Characters In Live Action

Score: +1

Zac Efron

as Diego in Actors & Actresses As Characters In Live Action

Score: +1

Benedict Cumberbatch

as Megatron in Actors & Actresses As Characters In Live Action

Score: +3

Tom Holland

as Sid in Actors & Actresses As Characters In Live Action

Score: +1

Seth Rogen

as Manfred/Manny in Actors & Actresses As Characters In Live Action

Score: +1

Gerard Butler

as Optimus Prime in Actors & Actresses As Characters In Live Action

Score: +4

Amy Adams

as Sally Carrera in Characters For Actors & Actresses To Play In Live Action

Score: +1

Teagan Croft

as Carly Witwicky in The Transformers

Score: +3

Jack Champion

as Spike Witwicky in The Transformers

Score: +4

Matthew Lillard

as Tow Mater in Characters For Actors & Actresses To Play In Live Action

Score: 0

Chris Pratt

as Lighting McQueen in Characters For Actors & Actresses To Play In Live Action

Score: +3

Teagan Croft

as Carly in Characters For Actors & Actresses To Play In Live Action

Score: +4

Tom Kenny

as Scrappy-Doo in Scooby-Doo

Score: +1

Bill Hader

as Scooby-Doo in Scooby-Doo

Score: +3

Gabriel Bateman

as Shaggy Rogers in Scooby-Doo

Score: +2

Lia McHugh

as Velma Dinkley in Scooby-Doo

Score: +3

Beatrice Kitsos

as Daphne Blake in Scooby-Doo

Score: +2

Maxwell Jenkins

as Fred Jones in Scooby-Doo

Score: +5