Shihoutu Tokitu

Head Chef is an NPC of the Great Tomb of Nazarick that normally works in the Restaurant of Nazarick.

Background
In the Web Novel, it's stated he was a creation of the Supreme Beings.

The Lizard Man Heroes Arc
While serving Aura a meal on her break, Pestonya promised to pass her compliments to the Head Chef.

The Men in the Kingdom Arc
During Sebas Tian's argument on allowing Tuareninya Veyron to join Nazarick, he addressed that their organization had a shortage in hands that could cook. Ainz believed it was a good argument, though Demiurge believed her skills would be lacking to which it was proposed that the Head Chef would instruct her on how to be a cook in Nazarick.

The Two Leaders Arc
The Homunculus Maids, while jealous of watching CZ2128 Delta's affection for Eclair Ecleir Eicler, commented that the Head Chef should cook the penguin as the Head Chef was, coincidentally, going to host a tasting of various dishes made of food from the New World.

The Drama of Three Ladies Arc
The Head Chef prepared a platter of dessert cakes for a tea party organized by Albedo for her fellow female Floor Guardians: Aura Bella Fiora and Shalltear Bloodfallen.

Abilities and Powers
Head Chef is in charge of preparing meals and feasts within the Great Tomb of Nazarick.

Sous-chef
Head Chef is Sou-chef's superior in the dining hall.

Trivia

 * In all of Nazarick, Head Chef is one of three people who have the Cook job class.
 * In the Web Novel, the Head Chef was involved in attempting to teach the Homunculus Maids how to cook.