Donald, Sandy, and Mr. Cat Face

Donald, Sandy, and Mr. Cat Face are minor characters in Gravity Falls. Their owner is Lazy Susan, a waitress who works at Greasy's Diner.

Personality
While Donald and Sandy seem mostly sullen, Mr. Cat Face is sometimes defiant and easily irritated. They like balls of yarn, as seen when one of them (not known which), climbed up to Lazy Susan's shoulder when she dresses as a ball of yarn for Summerween.

Appearance
All of them appear to have light grey fur. For Summerween, Lazy Susan put white cat masks on them. It also looks like they have black eyes, although that could be part of the masks.