Also known as: ダークエルフ
An Elf sub-type that is stereotypically portrayed as evil or as the opposite of normal elves. In some works, they are treated as a separate but related species of elves and are not necessarily evil.
Their appearance varies from depiction to depiction. Those inspired by Dungeons & Dragons tend to have Colored Skin in various tones of blue, grey, or purple. Others, like the Dark Eldar from Warhammer 40k, tend to have extremely pale or White Skin. Dark elves in Japanese works tend to just have Dark Skin.
This tag can also be applied for elves from copyrights where they have none of the above yet it is their title as a character.