Black Knight guardians are elite guards and a division of the Kinshra, sent to guard important locations throughout Gielinor. While their appearance is identical to that of an Elite black knight, their strength and abilities are different. Two Black Knight Guardians are encountered as the bosses of A Void Dance, in which the Kinshra attempt to use a captive Void leech in order to weaken Falador. The Guardians protect the room with the pest in it, and one must be fought by the player, while the other is fought by Captain Korasi.
A Black Knight guardian is fightable as a class E boss monster in the Dominion Tower minigame if the player has completed A Void Dance.
The Elite Black Knight Guardian appears to be wearing a modified version of the Saradomin Sword, without the excess ligaments on the blade, only having two indents and a hilt which its Saradomin Symbol has been pointed upwards. Despite the fact it may look like a Saradomin Sword, Black Knights are followers of Zamorak.
The Guardian wields his 2h sword differently than players.
Monster Examine states that this monster has a max hit of 114 life points, but they have been known to hit much harder when draining a player's prayer. It is not known whether this is a glitch or not.
Despite having a lower combat level than an Elite Black Knight, whom they closely resemble, they are by far more dangerous due to their damage output and prayer draining ability, although they attack slightly slower and cannot use prayer themselves.