Nazarick Old Guarder

Nazarick Old Guarders (ナザリック・オールドガーダー) are a special class of undead that spawn automatically from the Great Tomb of Nazarick's dungeon defense system.

Appearance
They are skeletons that wear elaborate breastplates and are armed with a paraphernalia of weaponry.

Background
Nazarick Old Guarders originally served as dungeon guards of the Great Tomb of Nazarick. After the tomb was relocated to the New World, the Guarders became the foundations of Nazarick's growing military might.

The Lizard Man Heroes Arc
After Cocytus' failure in annihilating the Lizardmen Alliance of the Great Lake, Ainz decided, through the convincing of Cocytus and Demiurge, to change his plan from destruction to occupation. Thus he called forth three thousand Nazarick Old Guarders to the battlefield, to awe the primitive demi-humans with a pure show of might.

The Two Leaders Arc
A garrison of Nazarick Old Guarders stayed in the vicinity of the Green Claw Village to guard against intruders.

The Invaders of the Large Tomb Arc
Several Old Guarders faced off against Green Leaf and dispatched them easily.

The Magic Caster of Destroy Arc
Several hundred Guarders were present at the Massacre at Katze Plains. After Ainz Ooal Gown personally destroyed the Royal Army, he and Albedo were escorted by Nazarick Old Guarders to E-Rantel.

The Craftsman of Dwarf Arc
Shalltear Bloodfallen handed over a hundred Quagoa prisoners to the Old Guarders and ordered them to be taken to the 5th Floor for experimentation and interrogation.

Abilities
The Guarders possess items with various magic effects, equipped with magic armors and shields. They are skilled in fighting and comes with special abilities. In one hand, they hold triangular-shaped shields, kite shields, and in the other hand they hold all sorts of magic weapons. Particularly, magic weapons like their hammers are imbued with lightning. On the other hand, they even also carry quivers and compound bows on their backs. These are skeletons which are equipped to be both offensive and defensive with capabilities to fight at both long and short distances.

Trivia

 * They are at least as strong as a mythril-ranked adventurer.
 * There also other units of the Guarders such as the Nazarick Elder Guarders and Nazarick Master Guarders though it is not specified how strong those units are compared with Nazarick Old Guarders.