The official GemStone IV encyclopedia.
A rock troll zombie is a towering sight to behold. Standing well over the height of two giantkin combined, the troll zombie is clad in rock armor, composed entirely of granite. Golden embers burn with a hatred of life out from under the zombie's massive granite helm.
Sometimes the rock troll zombie uses a turn to "backpedal", which increases its physical DS by a large amount until its next action. It appears to have a greater chance to perform its tackle maneuver right after backpedalling, but this is not confirmed. Note that its bolt DS and all TDs are unaffected by backpedalling.
An example of a rock troll zombie's barehanded weapon disarm maneuver.
A rock troll zombie chooses an opening, and attempts to disarm you barehanded!
[SMR result: 76 (Open d100: 56)]
A rock troll zombie connects!
a rock troll zombie fails to knock the runestaff away!
An example of a rock troll zombie's tackle maneuver.
A rock troll zombie rushes towards you!
[SMR result: 109 (Open d100: 95)]
Your size enormously hinders your defense!
A rock troll zombie hurls himself at you and connects!
A rock troll zombie pins you to the ground and quickly jumps to his feet!
Roundtime: 11 sec.