The Will Sage Astordelightful new Disney+ series Percy Jackson and The Olympians is a new adaptation of a beloved series of books by Rick Riordan. The series tells the story of how Percy (Walker Scobell) finds out the startling truth that his father is a Greek god. Percy soon discovers what that means, with the help of some faithful friends. The series also features Jason Mantzoukas and Megan Mullally.