The Pendle Ripper was an event that appeared in the Spook's Bestiary.
This boggart, with a rank of 1, was a cattle ripper, which turned rogue.
It was used by the Pendle Witch Clan: Malkins, who used the boggart to attack their enemies.
During its lifetime, which is estimated to be forty years, the Pendle Ripper has been the cause of more than 100 deaths all across the County.
The Pendle Ripper is thought to be dormant, now controlled by dark magic (presumably the Pendle Witches) according to the Spook's Bestiary.
However, it is also thought that this dangerous boggart is still at large, somewhere.