Suggestions by @christinaaaaaa

John Krasinski

as Frederick Chase in Mangus Chase

Score: +1

Mckenna Grace

as Annabeth Chase in Mangus Chase

Score: +1

Jaeden Martell

as Hearthstone in Mangus Chase

Score: +1

Regé-Jean Page

as Blitzen in Mangus Chase

Score: +1

Lachlan Watson

as Alex Fierro in Mangus Chase

Score: 0

Charlie Plummer

as Magnus Chase in Mangus Chase

Score: +2

Sascha Ovard

as Carol Last in Radio silence

Score: +1

Maitreyi Ramakrishnan

as Raine Sengupta in Radio silence

Score: +1

Morgan Davies

as Aled Last in Radio silence

Score: +1

Kim Ji-soo

as Daniel Jun in Radio silence

Score: +1

Brianne Howey

as Lana Janvier in Radio silence

Score: +1

Mia Isaac

as Frances Janvier in Radio silence

Score: +1

Matilda Freeman

as Carys Last in Radio silence

Score: +1

Ewan Mitchell

as Xenophilius Lovegood in Marauders Era

Score: +1

Leo Woodall

as Gilderoy Lockhart in All The Young Dudes

Score: +2

Milena Tscharntke

as Valerie Parkinson in Marauders Era

Score: +1

Alexander Skarsgård

as Evan Rosier's Dad in Marauders Era

Score: +1

Jessica Chastain

as Evan Rosier's Mom in Marauders Era

Score: +1

Luca.jwo

as Regulus Black in All The Young Dudes

Score: -1

Luca.jwo

as Regulus Black in The Marauders

Score: -3