Cave Rippers are small, twisted humanoids with tough, leathery, pale
grey skin. They have long arms and fingers tipped with razor-sharp
claws.  5-10 [d6+4] of the creatures will travel in a pack and can be
found roaming the underworld in search of weak prey to devour. Their
favored means of attack is to swarm a target and repeatedly claw it
until it is dead. Up to four of them can swarm a normal-sized human
target, two for smaller races like Dwarves or Halflings. A successful
roll to-hit against a target means they have latched on that round,
doing no damage but gaining +2 to-hit and doing full claw damage in
subsequent rounds.  PCs can remove up to two attached Cave Rippers per
round, with a successful roll to-hit both creatures are flung away,
but only one of them will take damage. Note that this applies even to
fighters of 2nd-level or higher - a fighter's multiple attacks per
round apply only to non-attached Cave Rippers.

Cave Ripper*

+------------+---------------+
|AC          |7 [12]         |
+------------+---------------+
|HD          |1              |
+------------+---------------+
|ATK         |1d6 claws      |
+------------+---------------+
|SP          |Swarm attack   |
+------------+---------------+
|MV          |18             |
+------------+---------------+
|HDE/XP      |2/30           |
+------------+---------------+
|SAV         |17             |
+------------+---------------+
|BHB         |+1             |
+------------+---------------+
|AL          |Chaotic        |
+------------+---------------+

* Stat block above is for Swords & Wizardry Whitebox (or OD&D, Delving
  Deeper, etc.), where HD are d6-based. For other S&W editions, or for
  Labyrinth Lord, use 1d8 for both HD and damage.
.