Sir Reginald Hargreeves, also known as The Monocle, is an alien disguised as a wealthy entrepreneur and world-renowned scientist. ... He was very cold in his raising of the children in that he refused to let the children call him father, instead preferring to be called The Monocle.

Why did Reginald Hargreeves turn into an alien?

As Reginald did not want to see JFK killed, he attempted to break ties with the organization. They did not take well to that, and made the mistake of threatening to expose his secret. With his back turned to the audience, Reginald takes off a mask to unveil his alien form, and slaughters the members of Majestic 12.

Is Reginald Hargreaves an alien?

The Umbrella Academy is a story of an adopted family of children with abilities, who were implanted in their mothers by a disguised extraterrestrial, who called himself Reginald Hargreaves, or "The Monocle." He refers to the children by number. ... The Umbrella Academy careens from one viewpoint to another.