Walter Donovan (portrayed by Julian Glover) is the main antagonist of Jeffrey, Jaden, and Friends' Adventures of Indiana Jones and The Last Crusade. He sends Indiana Jones, Jaden and his friends, and Jeffrey and his friends to search for the Holy Grail. It is later revealed that he was secretly working with the Nazis. After shooting Indy's father, he forces the heroes to get the grail in the temple. Donovan was defeated after he drank from the false grail, which took the life away from him, and turned him into dust.