Seamus Zelazny Harper is a denizen of the planet Earth as well as the chief engineer of Reef Home. He is responsible for creating Rommie and well as a number of other devices and the modifications to C-3PO, R2-D2 and Data. Harper is a member of the Reef Home crew and is the engineer and fix-it man. Harper is the only member of the Andromeda's crew born and raised on post-Commonwealth Earth, specifically in Boston. After the Fall, it was conquered by the wealthy and powerful, ruling Nietzschean Pride called the Drago-Kazov, who treated unengineered humans poorly, and its inhabitants were frequently attacked by the Magog.