Board Thread:General Discussion/@comment-38427691-20200111082245/@comment-27045866-20200111085943

What do you mean by "kitty"? Are you talking about a literal cat or a monster girl? If it's a monster girl, any monster girl can come back as an undead if they died with regret similar to a Dragon Zombie.

MGE Volume 2:

"Though most undead arise from human women, there are also undead elves and dwarves, as well as the dragon zombie described later in this volume. In fact, any monster that dies with regrets has the potential to rise as one of the undead. The kingdom of the undead is, therefore, quite diverse."

If you mean literal cat, I guess it could become an undead Cait Sith

Caith Sith:

"When a cat is joined to its male owner by a strong bond, and it has developed feelings of love for him, if it is showered in Demonic energy, it will transform into one of these "cait sith". "