The cast of FNaF 3 consist of Springtrap and the Phantom animatronics.
This game only introduced Spring Bonnie as a new character, who later became Springtrap. Spring Bonnie never had an official model made, but it was once planned for Help Wanted and an image of it can be seen on The Ultimate Guide.
Springtrap
Spring Bonnie
Phantom Freddy
Phantom Chica
Phantom Foxy
Phantom Mangle
Phantom BB
Phantom Puppet