Cosby doll
The Cosby doll is a vintage 1985 doll named "Little Bill Cosby". It was originally released as a children's toy by Remco, based on the 1972 show wikipedia:Fat Albert and the Cosby Kids
The doll was bought by Ian for four dollars, for the 2020 Christmas gift giving.[1]
The doll was left in the cursed stroller after the episode, and then picked up by AB, who gave it to Ian, who then delivered it to Dan's apartment. AB then took it back after.
When Zach wanted AB's gaming chair, AB brought it to him with the doll.[2] When Zach rejected it, AB left it on his car outside, but when Zach went out later the doll was gone.
The doll then showed up again during the 2021 ghost hunting Halloween special, when Zach spotted it sitting on a chair in the corner.[3]