Kitty Hotep is a mummified cat who runs a restaurant in Edge of Reason
The in-story origin of Kitty Hotep is unknown.
She was originally created by Oren Otter for a series called "Anama City", which, if produced, would have featured retired and failed Warner Brothers' cartoons as well as a slew of bad ideas reworked to be funny. Her name at that time was "Dead Kitty". She was to be the guardian of the history museum run by Sir Nosalot, and occasionally preyed upon by Kerry-Ann Vulture.
She's a cat and a mummy. What more is there to say?
She's dead, Jim. She doesn't really have a personality.