Undead troll

The Undead troll is an undead version of a troll. Being undead, they are vulnerable to the effects of a Salve amulet or to the Crumble undead spell. They can be also killed for a troll slayer assignment. They are surrounded by Elite Black Knights, that are aggressive unless you are wearing Dagon'hai robes or Elite black armour. When you reach the trolls' locale, you no longer need to wear those. To access their locale, you need to have made some progress on the While Guthix Sleeps quest. Although blue charms are their most common charm drop, on average they only drop a charm every ten kills, making them very bad for charm collecting. They are also mentioned about travelling north for reasons unknown. This may mean Lucien was planning what he was going to do for decades, maybe even longer.

Habitat(s)
The undead trolls live in Lucien's camp. To access this camp, you need to go to Surok's room at the end of the Black Knights' Fortress dungeon, and then activate the Strange teleorb. You must have a death and a law rune in your inventory, which will be used up.

Other drops

 * Nothing
 * Coins (270-500)
 * Pure essence (10, 15 noted)
 * Coal (7 noted)
 * Gold bar (1 noted)
 * Oak plank (6 noted)
 * Teak plank (3 noted)
 * Uncut emerald
 * Clue Scroll (level 2 for all levels)
 * Lobster
 * Tuna

Herbs and seeds

 * Avantoe seed
 * Wildblood seed
 * Irit seed
 * Spirit weed seed
 * Whiteberry seed
 * Kwuarm seed
 * Watermelon seed
 * Tarromin seed
 * Grimy tarromin
 * Grimy harralander
 * Grimy irit
 * Grimy marrentill
 * Grimy lantadyme
 * Grimy avantoe

Charms and runes

 * Crimson charm
 * Gold charm
 * Blue charm
 * Green charm
 * Earth rune (11, 66, 83, 99, 114, 141)
 * Death rune (5, 10)
 * Nature rune (12, 20, 23)
 * Law rune (4)

Armour, weapons, and projectiles

 * Adamant hatchet
 * Black warhammer
 * Mithril platebody
 * Mithril bolts (3)
 * Steel 2h sword
 * Steel battleaxe
 * Rune bolts (12)
 * Granite shield
 * Rune longsword

Trivia

 * These are the only trolls that have the new graphic update.
 * Undead trolls were referred to long before being added to the game. They were first mentioned in Nestor Peregrine's Explorer's notes found within Keldagrim Library. It was speculated that the trolls were to be involved in the God Wars Dungeon update, but they did not appear until the While Guthix Sleeps quest more than a year later.