Yarnaby (Alt. Ending!)

Yarnaby is a lion-like creature, with his mane and fur composed entirely of multicolored yarn. Unlike real lions, his tail is absent. His features extend to an orange-yellow face and limbs, with a black line vertically splitting his face into two, while a touch of tan graces his three-toed paws. His spherical head contains two large, cartoony white eyes with black, dilated irises and small white pupils. On his face sits a big grin with three triangular fangs poking out asymmetrically from his lower lip, giving him a goofy appearance. His monster counterpart remains largely the same, with the exception of his paws featuring sharp, retractable dark claws and a dewclaw on each front paw. In this form, his face splits in half to reveal a large open mouth hollowed out inside his head, giving him a deranged and disturbing physique. The hollowed-out portions are composed of bright crimson flesh, and the outer rims contain swollen gums lined with a ring of sharp jagged teeth, several of which are chipped and broken. Blood can be seen dripping from his gums, indicating that rather than his teeth sitting flush together, they stab into his gums when the mouth is closed. Closer observation of Yarnaby's true mouth reveals a smaller ring of jagged teeth lining his throat.
Yarnaby is quite strong, as his body is comparable to that of a lion. He is also described as quite fast and agile. His face can open vertically, revealing two rows of sharp teeth and a strange, small inner mouth

Following the procedure, Yarnaby displayed strange indications of fealty to selected members of the security staff. Sawyer figured out that this meant Yarnaby could be molded as he saw fit, and had Yarnaby isolated from all contact apart from with Sawyer himself, causing Yarnaby to form an attachment exclusively with him. Sawyer intended to use Yarnaby as a personal bodyguard, but following Sawyer's "removal", Yarnaby lapsed into an unresponsive, grief-stricken state. Dr. Carmine McKabe deemed Yarnaby a failure by design, and left it to the higher-ups to decide what to do with him.

Yarnaby is a toy produced by Playtime Co. and a secondary antagonist in Chapter 4: "Safe Haven". In 1990, a young orphan named Quinn Navidson was chosen to become Experiment 1166, the Bigger Bodies experiment title for Yarnaby.(Poppy Playtime character)
Playtime Corporation created living toys by experimenting on orphans. The victim of this experiment was Quinn Navidson. Quinn was presumably a troubled and possibly shy orphan who was believed to purposely hold himself back so people would have lesser expectations of him. Quinn was open to putting in more effort with good convincing as proven when he agreed to try harder when reattempting the Game Station's tests after having a talk with Harley Sawyer. In a desire to make things "prettier", Quinn would cut off the heads of his toys replacing them with other toys' heads, attracting the concern of his counselors.
Following the procedure, Yarnaby displayed strange indications of fealty to selected members of the security staff. Sawyer figured out that this meant Yarnaby could be molded as he saw fit, and had Yarnaby isolated from all contact apart from with Sawyer himself, causing Yarnaby to form an attachment exclusively with him. Sawyer intended to use Yarnaby as a personal bodyguard, but following Sawyer's "removal", Yarnaby lapsed into an unresponsive, grief-stricken state. Dr. Carmine McKabe deemed Yarnaby a failure by design, and left it to the higher-ups to decide what to do with him.After the company closed, Yarnaby remained to live at the factory, listening to Harley, who had become a machine.

HE CAN'T SPEAK,He only growls and plays music. Sometimes he can make sounds and readable words if he tries.

Yarnaby was originally stated to be docile, agile, and highly impressionable. Unlike the other experiments, the Bigger Bodies version of Yarnaby showed no signs of hostility toward the scientists and staff. Furthermore, he displayed a peculiar semblance of obedience and loyalty towards certain security officers and scientists, including Dr. Harley Sawyer himself (similar to how CatNap was loyal to The Prototype). During his isolation sessions with The Doctor, Yarnaby developed an affinity with the latter, perceiving him as his master, which was exactly as Harley intended, though he never cared for Yarnaby.