Some of the background character puppets for this adult puppet sitcom were reused from the children's puppet video The Adventures of Timmy the Tooth (1994).
Throughout the episodes, Greg's eyes change from buttons to actual eyes. The first episodes were filmed with button-eyes but because the episodes are shown out-of-order, the types of eyes alternate.
The puppet for Tardy the Turtle is owned by FOX TV and as yet has not been released to the Greg The Bunny writers for future episodes.
The Susan Monster puppet is owned by Fox TV and will not be starring in the new episodes