Boss

A boss is a powerful, usually unique monster that is fought to accomplish an objective, be it the advancement or minigame, or as part of a team player-versus-monster event. Some monsters commonly referred to as bosses are powerful monsters that reside in multi-combat areas; these monsters are commonly fought by teams of players in search of highly valuable drops. Many bosses have extremely high combat levels, and most of the strongest monsters in the game are bosses. With the exception of Bryophyta and Obor, bosses are exclusive to members.

Dwarf multicannons often cannot be set up in the areas of many bosses. Others may have different restrictions; for example, Prayer cannot be used during the fights with the final bosses of Recipe for Disaster.

Most bosses (e.g. bosses like the Corporeal Beast) also reside in a multi-way area; very few reside in single-way areas or instances. Most bosses will also generate a message upon kill telling the player what drop(s) they have obtained. For example, if players are at General Graardor and kill him (and drops Bandos tassets), a message will appear in the game box saying "Player name received item: Bandos tassets".

List of bosses

Slayer bosses

Bosses in this category require a Slayer task either to the boss itself or the creature equivalent in order to be fought.

Name	Image	Level	Hitpoints	Attack style	Location	Slayer requirement	Unique drops
Grotesque Guardians		Dusk: 248 Dawn: 228	450 (Each)	Melee (stab), Ranged, Magic	Slayer Tower	75	Granite gloves Granite ring Granite hammer Black tourmaline core Jar of stone
Abyssal Sire		350	400	Melee	Abyssal Nexus	85	Unsired Jar of miasma
Kraken		291	255	Typeless Magic	Kraken Cove	87	Kraken tentacle Trident of the seas Jar of dirt
Cerberus		318	600	Melee (stab), Ranged, Magic	Cerberus' Lair	91	Primordial crystal Pegasian crystal Eternal crystal Jar of souls
Thermonuclear smoke devil		301	240	Typeless magical ranged	Smoke Devil Dungeon	93	Smoke battlestaff Occult necklace Jar of smoke
Alchemical Hydra		426	1100	Ranged, magic	Karuulm Slayer Dungeon	95	Hydra leather Hydra's claw Alchemical hydra heads Jar of chemicals

Wilderness bosses

These bosses are located within the Wilderness, where players may attack each other. A notable exception is the King Black Dragon: its lair where the fight takes place is not located in the Wilderness, but it can only be accessed through Wilderness.

Name	Image	Level	Hitpoints	Attack style	Location	Unique drops
Chaos Fanatic		202	225	Melee, Magic	West of the Lava Maze	File:Malediction shard 1.pngMalediction shard 1 Odium shard 1
Crazy archaeologist		204	225	Melee, Ranged	Ruins south of The Forgotten Cemetery	Malediction shard 2 Odium shard 2 Fedora
Scorpia		225	200	Melee	Cavern beneath Scorpion Pit	Malediction shard 3 Odium shard 3
King Black Dragon		276	255	Melee, Dragonfire (long-ranged)	His lair, located deep in the Wilderness	Kbd heads Dragon pickaxe
Chaos Elemental		305	250	Magic, Ranged, Melee	West of the Rogues' Castle	Dragon pickaxe
Vet'ion		454	255	Melee, Magic	North of the Bone Yard	Ring of the gods Dragon pickaxe
Venenatis		464	255	Melee, Magic	East of the Bone Yard	Treasonous ring Dragon pickaxe
Callisto		470	255	Melee, Magic	South of Demonic Ruins	Tyrannical ring Dragon pickaxe

Other

These bosses are not restricted to a certain activity and may be killed at any time. All except Zulrah, Vorkath & Deranged Archaeologist may be fought with a group.

Boss slayer

Players who have unlocked the Like a boss ability via spending 200 Slayer reward points can have Konar, Nieve/Steve, Duradel, or Krystilia assign them boss monsters in addition to the tasks they already assign. The Slayer master will randomly assign a boss for which the player meets the below requirements. For example, they can assign the Dagannoth Kings to any player (since there are no special requirements), but Commander Zilyana can only be assigned if the player has 70 Agility and has completed Death Plateau. Krystilia can only assign the bosses located within the Wilderness.

After determining the boss, the Slayer Master will ask the player to select the amount that they want to kill for their assignment. The player can select anywhere from 3–35 kills (36 if Barrows is assigned). The maximum assignment can be increased by completing Combat Achievement tiers, up to a maximum of 50. Upon finishing a boss task, the player will get an additional 5,000 Slayer experience.

The following bosses can be assigned:

Boss	Location	Slayer	Other Requirements
Abyssal Sire	Abyssal Nexus	85
Alchemical Hydra	Mount Karuulm Dungeon	95
Barrows brothers (not chests)	Morytania	1
Callisto	Wilderness	1
Cerberus	Cerberus' Lair	91
Chaos Elemental	Wilderness	1
Chaos Fanatic	Wilderness	1
Commander Zilyana	God Wars Dungeon	1	70 , completion of Death Plateau
Crazy archaeologist	Wilderness	1
Dagannoth Kings	Waterbirth island	1
General Graardor	God Wars Dungeon	1	70 , completion of Death Plateau
Giant Mole	Mole Lair	1
Grotesque Guardians	Morytania Slayer Tower	75	Unlock roof via Brittle key
K'ril Tsutsaroth	God Wars Dungeon	1	70 , completion of Death Plateau
Kalphite Queen	Kalphite lair	1
King Black Dragon	King Black Dragon's Lair	1
Kraken	Kraken cove	87
Kree'arra	God Wars Dungeon	1	70 , completion of Death Plateau
Sarachnis	Forthos dungeon	1
Scorpia	Wilderness (Scorpion Pit)	1
Thermonuclear smoke devil	Smoke devil dungeon	93
Venenatis	Wilderness	1
Vet'ion	Wilderness	1
Vorkath	Ungael	1
Zulrah	Poison Waste	1