Lord of the Rings Online Bestiary: Type - Arch-nemesis
| Name | Type | XP Level | Zone |
| Adhargal | Arch-Nemesis | 51 | Helegrod, Misty Mountains |
| Amarthiel | Arch-Nemesis | 52 | Instance: Oakheart's Might, Instance: The Fate of Laerdan's, Instance: The Prisoner of Sammath Baul, Instance: The Doom of the North |
| Ansach | Arch-Nemesis | 51 | Helegrod, Misty Mountains |
| Bogbereth | Arch-nemesis | 50 | Torech-i-Bogbereth |
| Breosal | Arch-Nemesis | 51 | Helegrod, Misty Mountains, Torech Mordeloth |
| Durin's Bane | Arch-Nemesis | 64 | Azanarukar |
| Ferndur the Virulent | Arch-Nemesis | 49 | Angmar, Imlad Balchorth |
| Fruz | Arch-Nemesis | 52 | The Rift of Nurz Ghashu |
| Grisgart | Arch-Nemesis | 51 | Bavor Wyrm-brand's Tomb, Helegrod |
| Mordirith Illusion | Arch-nemesis Wraith | 54 | Instance: One Hope Remains |
| Narnulubat | Arch-Nemesis | 52 | The Rift of Nurz Ghashu |
| Nazgul | Arch-Nemesis | 50 | Helegrod, Helegrod Treasury, Instance: Unravelling The Thread |
| Nornuan | Arch-nemesis | 60 | Filikul, The Waterworks |
| Riptalon | Arch-nemesis Cave-claw | 55 | Durin's Way, The Fanged Pit |
| Storvagun | Arch-Nemesis | 53 | Helegrod |
| The Blind One | Arch-nemesis Nameless | 63 | |
| The Watcher | Arch-Nemesis Nameless | 64 | The Waterworks, The Vile Maw |
| Thorog | Arch-Nemesis | 54 | Helegrod |
| Thrang | Arch-Nemesis | 53 | The Rift of Nurz Ghashu |
| Tyrant Burzgoth | Arch-Nemesis | 51 | Ettenmoors, Isendeep |
| Tyrant Tharbil | Arch-Nemesis | 51 | Ettenmoors, Lugazag |
| Tyrant Trintru | Arch-Nemesis | 52 | Ettenmoors, Tol Ascarnen |
| Valtair | Arch-Nemesis | 54 | Annuminas, Evendim |
| War-tyrant Akulhun | Arch-Nemesis Krahjarn Tribe | 53 | Ettenmoors, Gramsfoot |
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