Black Demons

Black Demons are the hardest Demon in their race. They are considered the best Monster for Slayer tasks because they require a Slayer level of 1 while giving off massive amounts of experience.

They can be found in Taverly Dungeon through; Dungeon Teleports > More.. (to the very end) > Taverly Dungeon. Once inside the dungeon, follow the path until you come across them. If you have 60 agility, you can take the shortcut to the left (immediately after teleporting in) and then continue on forwards to them in moments.