Princess
From Will of the Seven Campaign
Princess was an ordinary house cat, and possibly a resident the village of Pearltown. Her story is unclear, but at some point in time she came under the control of Squidface either as a victim of mind control or an undead minion. While under his control, she was made to lure Protagonists into a trap, and possibly fight them as they were hallucinating being turned into mice.
The heroes found her dead upon waking up from their shared hallucination. It is unclear if her death was result of the actions of the heroes while under the sway of the Squidface magic, or if she was dead long before the encounter.