Golem

Golems (ゴーレム) are artificially created constructs.

Background
According to the Web Novel, if YGGDRASIL was a normal DMMO, the body of a monster would disappear immediately after death, so this would provide many advantages to the players.

For starters, a player could make an artificial Golem made out of Dragon Bones due to the amount of data put into it.

By playing around with this data with the creator tools, one could create their own Golem. In addition, the player could programmed that Golem as an AI to use for gate keeping and for transportation.

Appearance
Golems come in a myriad of forms depending on their purpose and materials used in their construction. Common Golems are created from wood, clay, flesh and stone, but others can be made out of almost any kind of material.

Abilities
Golems are incredibly strong constructs with endurance comparable to the undead. As the golems are artificial creations, they do not need nourishment or sleep. Created through magical means, golems obediently carry out their master’s commands once they received them.

Trivia

 * Aura currently commands a troop of these creatures in creating a stronghold in the southern Great Forest of Tob.
 * Originally, the golems from Nazarick acted as the spectators in the Amphitheater located at the 6th Floor of Nazarick.
 * If an NPC revolt happens, Ainz Ooal Gown can telepathically order the golems from Nazarick in case of emergency.
 * The Magician's Guild in Re-Estize use wood golems as security guards.
 * A set of Golems also assisted in the fortification of Carne Village.
 * There are four golems standing guard over the Empire's captured Death Knight. They were once considered as contenders for a supplemental workforce, but due to cost and logistics, that idea was scrapped in favor of the undead, which were much more strategic for economical use.