Ripper demon (species)
Ripper demons are very powerful and agile demons, which use their long claws to tear the victim into many parts. They came to Gielinor in the Second Age and initially served the god Zaros. After Zamorak defeated him, however, many of them joined his side and proved to be very important followers. However, during at least the early part of the Third Age, a number of these demons remained loyal to the Empty Lord, actively hunting those who betrayed their master.
During the God Wars, the Zamorakian ripper demons were tasked to kill important individuals of other armies. "The Ripper" was among the most important of them. He killed Sergeant Mazakon, an Icyene commander of Saradomin; Saint Elspeth, an important recruiter who sang beautiful songs to inspire Saradominists to join Saradomin's army; and many other important targets.
Shortly into the Third Age, the ripper demons who continued to follow Zaros were responsible for hunting down and killing two of the last five Dragon Riders, Balustan and Ablenkian, who despite their allegiance to the Empty Lord were branded traitors by his remaining followers.
During the Second Age (when all of them, or at least an enormous part of them, served Zaros), a pack of them attacked a small village for unknown reasons, however, Torva, who was an inhabitant of the village single handedly defeated them, impressing Nex, who recruited him to her army.