Neko Neko no Mi, Model: Saber Tiger

The Neko Neko no Mi, Model: Saber Tiger is an Ancient Zoan-type Devil Fruit that allows the user to transform into a hybrid and full version of a saber-toothed tiger at will. It was eaten by Who's Who.

Etymology

 * Neko (猫) is Japanese for "cat".

Strengths and Weaknesses
This fruit transforms its user into a saber-toothed tiger, a powerful, carnivorous predator from the prehistoric era, though the specific degrees of strength and ability granted have yet to be seen since the fruit has yet to be shown used in combat. Who's Who, an already large man, grows to a much bigger size in his full-beast form, appearing to dwarf his subordinates and the large fish-man Jinbe. No weaknesses of the fruit are known aside from the standard Devil Fruit weaknesses.

Usage
Who's Who was shown in his full-beast state relaxing at the "Cat Cafe" in Kaido's fortress.

Trivia

 * Fittingly for his Devil Fruit, Who's Who's closest subordinates appear to follow a cat theme, including several feline SMILE users..