In Un'Goro there is a tribe of night elf savages that were once based in the center of the crater on Fire Plume Ridge, however, the village has been destroyed and the tribes people scattered due to the recent volcanic eruption and the invasion of the fire elementals, successfully removing any trace of evidence that the tribe even existed if not for the tribe's survivors now roaming Azeroth. The origin of the tribe traces back to the time directly following the War of The Ancients where a blacksmith from the elven city of Suramar leads many of her people away to escape the invading Burning Legion. Morna Shimmerleaf(The blacksmith) had led her group to a place that is now called Un'Goro Crater. Unable to survive in such a harsh wilderness, all the men and some of the women died off due to sickness and pure coincidence. After the Great Sundering of the continent, the remaining women decided it would be best to leave the crater and see what had become of the elven empire. Upon their trek to find an exit, however, they stumbled across a mystical pond that had been surrounded and charged by red pylon crystals--the very same ones that dot the landscape. They drank the charged waters and suffered a transformation that ultimately turned them in to much larger, stronger, faster, savage versions of their former selves, also resulting in a severe memory loss. As such, Morna could not remember her full name and thus calls herself Mongra (Pronounced Mawn-Grah) As time passed, the savage elves learned to dominate the land with their new aspects, cultivating a village at the center of the crater on a mountain that would later become Fire Plume Ridge. Living off of the land for thousands of years and somehow finding a way to spark life inside themselves with the crystals and without any men, they were able to grow in numbers and become a tribe with its own unique culture and stone-set traditions. After the volcanic eruption, the tribe has fled to other parts of the world, mainly Stormwind(Being the main base of operations for the Alliance.) due to the fact that the Alliance has night elves, and they feel most comfortable around other night elves. The tribe's numbers were decimated by the volcano, and now there are only six left, including Mongra.This section concerns content exclusive to The Burning Crusade.
The Bloodstalker Tribe begins trusting the Alliance more and more, allowing night elves from Darnassus to drink the crystal-charged waters to become one of them. Humans are also allowed to join if they assume a status that closely resembles a pet. The humans that join are offered protection, food, shelter and a chance to live as free as an animal, which surprisingly some humans have agreed to.This section concerns content exclusive to Wrath of the Lich King.
The tribe allows humans to assume any amazon rank(A rank which could have only been earned by a night elf.) if they can prove themselves in battle without the use of any magic. They also start allowing draenei females to join.