chunk: The Betty crew soon encounters Ripley. Call recognizes her name and tries to kill her, suspecting she may be used to create more Aliens. The Aliens have already matured and escape confinement by killing off one of their own and using the acidic blood to burn through their enclosures. They damage the Auriga and kill the crew members who do not evacuate, including General Perez and Elgyn. Military scientist Dr. Wren reveals that the ship's default command in an emergency is to return to Earth. Realizing this will unleash the Aliens on Earth, Ripley, the mercenaries, Wren, a Marine named DiStephano and surviving Alien host Purvis decide to head for the Betty and use it to destroy the Auriga. Along the way, Ripley encounters the grotesque products of failed attempts to clone Ripley. The surviving one begs Ripley to mercy kill her, and she complies.