Shadow Freddy in 'Follow Me' is the Puppet.

Shadow Freddy in Follow Me is the Puppet leading the spirits to Purple Guy. In a similar fashion to how he did in Save Them.

Shadow Animatronics, Five Nights at Freddy's Wiki

The Puppet (Five Nights at Freddy's)

Shadow freddy poster 'follow me

Shadow Freddy, Five Nights At Freddy's Wiki

What is Shadow Freddy in the FNAF lore? : r/fivenightsatfreddys

Spotlight Celebration AU FNAF 2 Lineup (#3) by StellaEX on DeviantArt

So i guess William was using the ZPF to influence Shadow Freddy? : r/fnaftheories

Shadow Freddy's SECRET LORE in FNAF Movie #fnafmovie #fnaf #fyp, Five Nights at Freddy's

THE PUPPET PLAYS: Super FNAF

Shadow Freddy Render #1 by KingAngryDrake on DeviantArt