Suggestions by @jackgaffney

Simon Pegg

as Janus in Riordanverse

Score: +1

Chace Crawford

as Achelous in Riordanverse

Score: +1

Tyler Posey

as Theseus in Riordanverse

Score: +1

Nicholas Hoult

as Polyphemus in Riordanverse

Score: +1

Noah Centineo

as Asclepius in Riordanverse

Score: +1

Paul Mescal

as Achilles in Riordanverse

Score: +1

Rudy Pankow

as Apollo in Riordanverse

Score: +1

David Harbour

as Coach Gleeson Hedge in Riordanverse

Score: +1

Georgia Hirst

as Frigga in Riordanverse

Score: +1

Steve Toussaint

as Heimdall in Riordanverse

Score: +1

Ben Miles

as Python in Riordanverse

Score: +1

Matthew Needham

as Daedalus in Riordanverse

Score: +1

Ryan Corr

as Gaius Julius Caesar Augustus Germanicus in Riordanverse

Score: +1

Joseph Quinn

as Caesar Marcus Aurelius Commodus Antoninus Augustus in Riordanverse

Score: +1

Christian Antidormi

as Nero Claudius Caesar Augustus Germanicus in Riordanverse

Score: +1

Nia Sioux

as The Muses in Riordanverse

Score: +1

Dafne Keen

as Artemis/Diana in Riordanverse

Score: +1

Mia McKenna-Bruce

as Emma in Riordanverse

Score: +1

Georgia Pemberton

as Liz in Riordanverse

Score: +1

Alexandra Chaves.

as Thalia Grace in Riordanverse

Score: +1