Nestor

Nestor is a Russian nesting doll owned by Little Pete. The Gaiaphage uses Nestor to manipulate Pete.

Description
Nestor is shiny red and laced with gold, with a dead-eyed doll's head and a smooth body resembling a bowling pin. Nestor is also hollow, and is filled with several identical, smaller dolls.

When the Gaiaphage possesses Nestor, it grows twig-like arms and the patterns on it change shape. Its painted mouth turns real and becomes filled with sharp teeth, and its eyes also become real and "filled with menace".

Appearances
Nestor was given to Astrid Ellison by a travelling uncle in Moscow, but Little Pete immediately became fixated with it and gave it its name. As Pete had rarely identified with toys, Astrid let him keep it. Little Pete begins to float off the ground and fight Nestor, stopping the Gaiaphage from using it to come to life. This happens twice before he does it in a parking lot, teleporting Nestor to him. Sam comments that "The doll, the thing, whatever it was, It was fighting Pete, and Pete was fighting back. Like it was trying to come to life." Astrid stops him by slapping Little Pete's shoulder. Nestor is then teleported back to her house. Later, when the Gaiaphage uses Nestor to create a large number of monsters, Sam accidentally stamps on Nestor, destroying it. Little Pete later notices and throws a tantrum.
 * Before the FAYZ
 * Hunger

However, he begins to chant "Nestor" over and over again at the top of his lungs, and mentions that Nestor is hungry in the dark, causing Astrid to realize that the Gaiaphage is using Pete to learn creation. Lana Arwen Lazar, possessed by the Gaiaphage, sees that it plans to create a body consisting of the monsters in Pete's room in the style of a nesting doll, meaning they could be cast aside and replaced when not needed - making the Gaiaphage virtually unkillable. After this body is destroyed by Duck, Little Pete is seen chanting, "Goodbye, Nestor".