Suggestions by @jbroninja

Patrick Pinney

as Coach Nunley in Percy Jackson and the Olympians + The Heroes of Olympus

Score: 0

Blake Clark

as Coach Nunley in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Winona Ryder

as Persephone in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +2

Corey Stoll

as Atlas in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Ella Anderson

as Tammy in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Lizzy Greene

as Tammy in Percy Jackson and the Olympians + The Heroes of Olympus

Score: 0

Shawn Ashmore

as Paul Blofis in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Jon Bernthal

as Antaeus in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +2

Manu Bennett

as Antaeus in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Tristan Spohn

as Triton in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Cooper van Grootel

as Triton in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Jordan Elsass

as Triton in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Ethan Lamb-Kelly

as Triton in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +2

Mel Gibson

as Eurytion in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Joseph Gordon-Levitt

as Geryon in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Matt Smith

as Geryon in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Finn Wittrock

as Geryon in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Andrew Scott

as Geryon in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1

Gavin Casalegno

as Phobos in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +2

Hunter Romanillos

as Deimos in Percy Jackson and the Olympians + The Heroes of Olympus

Score: +1