The Ultimate returns with a thirst for vengeance! But why does he have his eye on sweet, innocent Grooter? Prepare yourself for the unthinkable. Also in this episode: Peer inside the mind of a Champion! Take a sneak peek at Shadowbane! Hear from Dave's best friend, Berney! Gasp at Dr. Julia Hopkins' report on a disturbing psychological disorder. Ponder the fate of the missing-in-action Drifter! And witness the most shocking finale to any episode of Portal ... ever!