5 suggestions
David Corenswet
as Superman/Clark Kent (Narrator) in Krypton: A Superman Story

Neva Howell
as Martha Kent in Krypton: A Superman Story

Pruitt Taylor Vince
as Jonathan Kent in Krypton: A Superman Story
Angela Sarafyan
as Lara Lor-Van in Krypton: A Superman Story

Bradley Cooper
as Jor-El in Krypton: A Superman Story