In which lines are drawn,
In which Jareth gloats.
ETA: For clarification, Evil!Jareth is still Jareth. "Doppelganger" was a title for the last episode, and not an exact or accurate term for what happened.
Jareth belongs to Henson, Lucas, and Bowie.
Aziraphale and Crowley belong to Gaiman and Pratchett.