Colonel Flounder and Mrs. Sunshine's eyelids are loaded as separate models rather than as a part of their bodies, most likely to help with blinking animations. It's possible to see what they look like without their eyelids in Create Mode by placing a Sackbot wearing either character's costume in front of any material and then hiding the Sackbot. While the Sackbot will appear transparent, its eyelids completely disappear.
Contributed by MehDeletingLater
Unused Paintinator models and icon can be found in the data.
Contributed by GamerBen144