Called as "descendant of moon goddess", "best protector of humanity", "the chosen against all evils" and "Grimm-hunting nobles" etc., they are the collective for description of groups of people who have heritable trait of moon-silver color eyes which possess special abilities of disrupting and even vaporizing the Creatures of Grimm (and matters of former's similar properties) through the usage of unleashing radial flame-like flash of light come from their eyes.
However, contrast to the popular belief, their silver-eyes power ability is just one, but four variations of silver-eyes power abilities, and the user only inherit one of the four trait variations. These following abilities are included:
[Silver-eyes ray] : Despite being the most well-known ability and the most longest range one among silver-eyes abilities, this ability is considered as less useful compared to others as it's often rather easy and obvious to identity and target the vulnerable spots. Overusing said ability may cause the user's eyes to feel minor pain and tiredness.
[Silver aura] : adding additional silver-eyes energy on their own Aura
[Silver kinetics] : generating kinetical shockwave made of silver-eyes energy
[Silver blood] : infusing silver-eyes energy within their own blood
( FUN FACTS: rumors said that the actual Silver-eyes power source is not come from the eyes itself, but rather come from a pairs of eyeball-size flaming orbs placing inside the eye socket.)
In terms of their own equipment, despite having their own interpretation in their own cultural circle, there are two most valuable materials viewed by silver-eyes user for anti-Grimm (and Grimm-folk) weapon making respectively: "Brighting-sliver" and "Moon-shiring herbs".
( FUN FACTS: There also have the less qualitied one called "Rough-silver", commonly used by lower rank members of said group, despite having similar properties of former mentioned one, not only have less than half effectiveness compare to the former in terms of negating Grimm-folk's rapid healing ability, but also cause several additional amount of pain to their Grimm-folk opponents which reach at certain point even some of silver-eyes users called it "unethical and very brutal".)
( FUN FACTS: There also have the most extremally rare one called "Igniting-soul silver", considered as "those only found in folktale legend". Despite not having distinctive appearance from other regular metals like iron, said metal will unleashes and surrounded with a leash of flame-like flash of silver-colored light, as long as be held by nearest silver-eyes user when their silver-eyes power are activated.)
( FUN FACTS: There also have other versions of herb-made mixtures for varied purposes, such as a certain eyedrops-like potion for not only providing cover their identity as silver-eyes user through changing their eyes color, but also providing additional functions as well, such as able to see through and identify Grimm-folk's identities even in before transforming into their own Grimm-forms.)