Greater Demons

From Runescape - Wiki on Neoseeker

Greater Demons are level 92 demons that are more powerful then their lesser demon cousins. They lack defense however, making them decent training for mid level players, but lower level players watch out because they still have the strength of a lesser demon. They also drop charms, mostly a fair number of Crimson Charms but also some gold, green and blue charms. This makes them useful for training both combat and summoning.