Armor Knight

The Armor Knight is a recurring humanoid class in the Disgaea series first introduced in Disgaea D2: A Brighter Darkness. They are essentially a female variant of the Heavy Knight class from prior games.

Characteristics
Armor Knights, similarly to Heavy Knights, are graduates of a military academy that trains knights to protect Netherworld nobles. In addition to fighting, they are trained in etiquette. When they graduate, they are appointed to work for a noble and are given a set of obsidian armor. Recently, the number of female graduates have greatly increased, and they now nearly outnumber the males.''

Armor Knights are not agile but boast powerful defenses, which makes them invaluable for any form of combat, from full frontal assaults to defense missions. Despite this, they have a mild personality and see the importance of teamwork.

Disgaea D2: A Brighter Darkness
Debuting in Disgaea D2, the Armor Knight class has very high defensive power. This class is unlocked by having a level 20 Warrior or Valkyrie.

Disgaea 5: Alliance of Vengeance
The Armor Knight is unlocked by having both a Warrior/Valkyrie and a Martial Artist/Fight Mistress at rank 3, then completing the associated quest.

Disgaea 6: Defiance of Destiny
The Armor Knight returns in Disgaea 6 and is unlocked by completing the Worthy of Guarding quest from the Quest Shop. The quest becomes available after the completion of the Steeling to Steal quest, which unlocks the Thief, and requires Rank 2 or higher class proficiency for both Warrior and Martial Artist.

Trivia

 * The names of the Armor Knight's ranks are from precious stone and mineral, and correspond to the color of their armor.