Basically we see all the animatronics in the first game team up against the other five games, and vice vice versa. I only count actually physical animatronics, so no AI or ghosts, or hallucinations so that why no FNAF 4, or FNAF help wanted.

LEt's see FNAF 1:

Freddy Fazbear

Foxy

Chica

Bonnie

Golden Freddy

FNAF 2

Toy Freddy

Toy Chica

Toy Bonnie

Mangle

JJ

Balloon Boy

The puppet

FNAF 3

Springtrap.

FNAF: Sister locations.

Circus Baby

Ballora

Funtime freddy

Funtime Foxy

Babybab

Ennard

Minireena

FNAF Pizzeria Simulator

Molten Freddy

Lefty

Security Breach has the strongest feats

And by that I mean higher into wall

FNAF security breach

Glamrock Freddy

Glamrock Chica

Roxanne Wolf

Moon/sun/eclipse

S.T.A.F.F. Bots

DJ Music Man

Glamrock Bonnie

Glamrock endoskeleton