Catzi is one of the Negamoon Sisters who work for Rubeus. Her hairstyle resembles cat ears. She says she is the oldest, but Wikipedia says she is the youngest. She attacks da throwing a stream of blue fuoco o launching multiple blue fireballs.

She was sent da Rubeus in Episode 14 to capture Rini, but Sailor Moon fought her off.

Later, Catzi attempted to take over a crystal point located at Raye's temple, sending a droid named Rhonda to defeat everyone and put them under her spell. Rhonda was destroyed, and Sailor Mars used Mars Celestial fuoco Surround to set Catzi on fire, forcing her to retreat....