Aliens: Xenogenesis is a four-issue limited comic book series that was first published by Dark Horse Comics from August-November 1999. It was written by Tom and Mary Bierbaum, illustrated by David Ross, inked by Andrew Pepoy, colored by Dan Jackson, lettered by Sean Konot and edited by Philip Amara and Mike Hansen, with cover art by Ross and Pepoy. Aliens: Xenogenesis formed the Aliens component of Dark Horse's franchise-crossing Xenogenesis event in 1999, and was released in conjunction with Predator: Xenogenesis and Aliens vs. Predator: Xenogenesis. The three loosely interconnected stories all share a similar new art and storytelling style that was a departure from the those typically found in the series until then. The conclusion of Xenogenesis also marked the beginning of a ten-year hiatus in the Aliens comics line, during which time no new Aliens comics would be released. It was preceded by Aliens: Apocalypse - The Destroying Angels, and when the Aliens line eventually resumed, it was followed by the Aliens (2009 short story).