Complex sentence: The only known physical incarnation of XANA appeared in the Season 1 episode "Ghost Channel"; where after having its disguise as Jeremy being exposed, it transforms into a demonic caricature of him and tried to kill all of the warriors.
Split into simpler sentences: The only known physical incarnation of XANA appeared in the Season 1 episode "Ghost Channel". Where after having its disguise as Jeremy being exposed, it transforms into a demonic caricature of him and tried to kill all of the warriors.