Shadow Foxy

Appearence
Shadow Foxy seems to be a purple-colored version of Foxy, He has black eyes and white glowing teeth and sometimes pupils too.

Location
Shadow Foxy is an easter egg in FNaF 2, he can be seen in the Parts/service room, standing there doing nothing.

Behavior
Shadow Foxy doesn't seem to really have a behavior, he just stays in the Parts/service room.

Trivia

 * He doesn't attack the player, he's just an easter egg like RWQFSFASXC.
 * Since the previous animatronics got destroyed by the Purple guy (theory), Shadow Foxy may be the "spirit" of the previous Foxy.