The Olog-hai, T, is the most powerful type of troll in NetHack. The name is derived from J.R.R Tolkien's works, in which the Olog-Hai were the Hill Trolls; a species of trolls that served the Witch-King while he ruled in Angmar and did not turn to stone in sunlight as many of their contemporaries did. Like all trolls, the Olog-hai revives after being killed. One way to stop them from coming back from the dead is eating or tinning the corpse before they revive. This page is a . You could probably [ expand this page] should you wish to do so.