A Grey Knight is the combination of a Black Knight and a White Knight, which makes it neutral and non-discriminating against others. A Grey Knight doesn't boast about any type of power other than not being better or placing him/herself above other colors of knights.
Person 1: I want to be saved by a White Knight, because he's so strong and mighty.
Person2: I would rather be saved by a Grey Knight, because he's neutral and doesn't think of himself as higher placed than the others.
Person2: I would rather be saved by a Grey Knight, because he's neutral and doesn't think of himself as higher placed than the others.
by Celisius October 1, 2020
Someone who defends an unknown person who has been warned or punished by a moderator especially when the reprimand was deserved but the grey knight feels the need to stick up for him regardless.
When the moderator warned a player for shouting racist insults over his mic a grey knight kindly told the moderator to chill out.
by joeybelfort June 26, 2012
warhammer 40k (gamesworkshop) universe space marine chapter, this chapter was created to fight the forces of chaos chapter 666
by OutLaw92 November 1, 2008