The Falstaff character is named Giles Habibula. He was once a criminal, and can open any lock ever made. In his youth he was called Giles The Ghost. Jay Kalam (Commander of The Legion) and Hal Samdu are the names of the other two warriors. In this story, these warriors of the 30th Century battle the Medusae, the alien race from the lone planet of Barnard's Star. The Legion itself is the military and police force of the Solar System after the overthrow of an empire called the Purple Hall that once ruled all humans.