Black demons are a large and powerful species of demons in the popular online role-playing game "Runescape." They inhabit a number dungeons, including those in Edgeville, Brimhaven, Taverley and the Chaos Tunnels. They are the second strongest type of demon in the game.
Because black demons are high-level, aggressive creatures, they are one of the more dangerous monsters in the game. Like other demons in "Runescape," they are particularly vulnerable to magic attacks. Protection prayers are useful to help players defend against them. They can be defeated through melee or ranged attacks as well, though doing so requires equipment with strong enchantments. Within the game, they are considered a good source of Crimson charms, which are used as in ingredient for creating Summoning pouches.