Dr. Golden "Preparation" is simple a Golden Sonic possessed by Dr. EGGMAN'S Spirit .
He took a fully control over the poor Yellow Hedgehog.
Golden Sonic's Soul is not only trapped inside of his own body, but has been absorbed as well by the Evil Mastermind.

In the Reveal Sketch Art:

Possessor Dr. EGGMAN and Inner Golden Sonic

Fun Fact: Abdominal wound on Dr. EGGMAN'S belly is the result of a previous event that happened in the original FNaS 3.
Salvage Sonic took a revenge, then Classic Dr. EGGMAN'S Spirit moved to the husk of given up Golden Sonic and then he possessed him.

Starring In the Comic:

~ Security Guard Silent

~ Dr. Golden "Preparation"

~ Possessor Dr. EGGMAN

~ *Voice of Inner Golden Sonic*