Boss

A boss is a powerful, usually unique monster that is fought to accomplish an objective, be it the advancement of a completion of a quest or minigame, or as part of a team player versus monster event. Many quests feature boss fights at their climaxes; such bosses are often the main antagonists of the quests or quest series, or are somehow related to the main antagonist(s). Some monsters that are commonly referred to as bosses are very powerful monsters that reside in multicombat 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.

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.

Common PvM bosses
The monsters included in this section are often killed by clans or otherwise organised teams of players for PvM (player vs monster) events. Each is found in a multicombat area, allowing many players to engage them simultaneously, and are often killed for valuable and/or unique items that they drop. Most are extremely powerful, and some may require specific strategies to fight effectively.
 * The Giant Mole is, true to its name, an enormous mole, level 230, that lives in its lair under Falador Park. A light source is required to fight it. During combat the Giant Mole attacks with melee and burrows around its rather large lair. Its chief drops, mole skin and mole claws, may be given to Wyson the gardener in exchange for bird's nests.
 * The King Black Dragon is an enormous, level 276, three-headed black dragon that resides in its own lair beneath the Lava Maze. It has the ability to drain stats, freeze players, and poison with different forms of its dragon breath, all of which are unique among dragons to the King Black Dragon. Aside from its own heads, which can be mounted in a player-owned house, the King Black Dragon has two unique drops, dragonrider boots and gloves. It also drops valuable items, such as the draconic visage.
 * Three level 303 Dagannoth Kings lair deep under Waterbirth Island. Each uses a different combat style: Dagannoth Supreme attacks with Ranged, Dagannoth Rex attacks with melee, and Dagannoth Prime attacks with Magic. Altogether the Kings drop several unique items, such as Seercull, dragon hatchets, berserker rings and mud battlestaves. They also drop a variety of Fremennik-related arms and armour, such as archer helms and skeletal armour.
 * The Chaos Elemental is a level 305 creature of pure chaos that resides in deep Wilderness, near the Rogue's Castle. In addition to attacking with all three combat styles, it can teleport players around it and unequip their items. It drops the dragon two-handed sword.
 * The Kalphite Queen is the ruler of the kalphites; she can be found at the bottom of the Kalphite Hive in the Kharidian Desert. Unlike many other bosses, she has two forms, both of which are level 333, and she uses protection prayers to block different attack styles. Her attacks are extremely accurate and very deadly for players who are unprepared for them. She drops the dragon chainbody and dragon two-handed sword; she also drops her head, which can be mounted in a player-owned house.

God Wars Dungeon generals
For each warring deity in the God Wars Dungeon, there is a very powerful leader commonly referred to as a 'general'. Each general also has three bodyguards, one of which uses each style of combat: Melee, Magic and Ranged. In addition to the 60 Strength or 60 Agility required to enter the God Wars Dungeon, each general's encampment has further requirements to enter.


 * Commander Zilyana is the level 596 Icyene general of Saradomin, attacking rapidly and accurately with both melee and Magic. Her bodyguards are Starlight, Growler and Bree. She drops the Saradomin hilt, and she and her bodyguards drop the Saradomin sword. 70 Agility is required to enter the Saradomin encampment.
 * K'ril Tsutsaroth is the level 650 demonic general of Zamorak. He is extremely poisonous and can hit through protection prayers with his powerful melee and Magic attacks. His bodyguards are the demons Tstanon Karlak, Zakl'n Gritch and Balfrug Kreeyath. He drops the Zamorak hilt, and he and his bodyguards also drop the Zamorakian spear. Entering the Zamorakian encampment requires 70 hitpoints, which implies but does not strictly require 70 Hitpoints (boosts such as saradomin brews can be used).
 * General Graardor is one of the last known living ourgs, although he may very well be the only ourg in existence. He is the level 624 general of Bandos and is the most popular God Wars Dungeon general to kill, despite his devastating melee and Ranged attacks. His bodyguards are Sergeant Strongstack, Sergeant Grimspike and Sergeant Steelwill. Along with the Bandos hilt, General Graardor and his bodyguards drop pieces of Bandos armour. 70 Strength and a hammer are required to enter the Bandos encampment.
 * Kree'arra the Aviansie is the level 580 general of Armadyl. Being a guardian and leader of the avainse, he cannot be attacked with melee weapons, though he uses all three styles himself. His bodyguards are Flight Kilisa, Flockleader Geerin and Wingman Skree. Kree'arra himself drops the highly valuable Armadyl hilt, and he and his bodyguards drops pieces of Armadyl armour. Enter Armadyl's encampment requires 70 Ranged and a mithril grapple.

Minigame bosses
These bosses are fought as parts of minigames.
 * TzTok-Jad is the final boss of the TzHaar Fight Cave minigame. It is level 702 and is extremely dangerous as all of its attacks, which hit from every side of the combat triangle, can each deal up to 98 damage. Additionally, TzTok-Jad summons Yt-HurKot to rapidly heal it once it reaches half health. The reward for defeating TzTok-Jad is 16,064 tokkul and the much-coveted fire cape.
 * The six Barrows brothers can be thought of as bosses, as each is quite powerful and together they are fought during the Barrows minigame. The brothers and their combat styles and levels are Ahrim the Blighted (Magic, 98), Dharok the Wretched (melee, 115), Guthan the Infested (melee, 115), Karil the Tainted (Ranged, 98), Torag the Corrupted (melee, 115) and Verac the Defiled (melee, 115) Each is an undead spirit and wears a certain set of equipment that gives a certain set effect; this equipment, known as Barrows equipment, can be obtained from the activity, and is highly popular as the sets are among the most powerful combat equipment in the game.
 * The Penance Queen is the level 209 boss of the Barbarian Assault minigame; she is fought during the tenth and final wave. She uses rapid melee and Ranged attacks and can only be damaged with omega eggs fired from the egg launcher. Defeating her earns players 80 honour points in their chosen roles, and 5 points in the other roles.

Quest bosses
A large number of quests involve and/or conclude with a battle against a powerful monster, which often is or is related to the quest's main antagonist. Except where otherwise noted, these bosses cannot be fought once their respective quests have been completed. However, many of them could be fought after in the Dominion Tower, after some other requirements have been met.

A sub-boss is a powerful or semi-powerful monster fought as a prelude to the actual boss fight.
 * Agrith Naar, a demon summoned to Gielinor by a group of Zamorakians, is fought at the end of Shadow of the Storm.
 * The Arzinian Avatar is the boss of Between a Rock....
 * Arrg is the strongest mountain troll in the game, and is the boss monster of Troll Romance.
 * Barrelchest, a hulking artificial construct controlled by Mi-Gor, is the boss of The Great Brain Robbery.
 * A Black Demon controlled by Glough is the final challenge in The Grand Tree.
 * The Black Knight Titan is the scourge of the Fisher Realm and is fought during Holy Grail.
 * Bouncer is a powerful hellhound, the pet of General Khazard, and is fought during Fight Arena.
 * Its ghost is fought during the Shadow Sword miniquest.
 * Chronozon is a demon who is the boss of Family Crest.
 * Count Draynor is a notorious vampyre who is the boss of Vampyre Slayer. He is one of the few free-to-play bosses.
 * The Culinaromancer is a powerful sorcerer who draws his power from food. He is the main antagonist of the Recipe for Disaster quest series, and is the final boss of its conclusion, Defeating the Culinaromancer.
 * Dad is a mountain troll who is fought during Troll Stronghold.
 * The Dagannoth Mother is the boss of Horror From The Deep.
 * Delrith is an ancient demon who was summoned to destroy Varrock; he is the boss of Demon Slayer. He is one of the few free-to-play bosses.
 * The Dramen Tree Spirit guards the dramen tree within Entrana Dungeon, and is the boss of Lost City. Because of the restrictions on Entrana, no weapons or armour may be used to fight the tree spirit.
 * Draugen is a spirit fought as part of The Fremennik Trials.
 * Elvarg is a green dragon who has decimated the island of Crandor, where she roosts. She is the final boss of Dragon Slayer, and is one of the few free-to-play bosses.
 * An Evil Spirit is the boss monster of Rum Deal.
 * Gadderanks is a human supporter of the vampyric regime in Morytania. He is fought during In Aid of the Myreque.
 * General Khazard can be optionally fought during Fight Arena.
 * The Giant Roc is a large avian fought atop Trollheim during My Arm's Big Adventure. He has the uncommon ability to knock players around the area with his massive wings.
 * A giant scarab is fought at the end of Contact!. Another, weaker scarab is fought close to the end of Dealing with Scabaras.
 * The Giant Sea Snake is the boss of Royal Trouble.
 * Glod is an enormous giant who resides in the cloud world above the magic beanstalk that players plant during Grim Tales; he is the quest's boss. He can disable prayers and force players towards or away from him.
 * The Ice Troll King, leader of the ice trolls, is the boss of The Fremennik Isles.
 * The Jungle demon is a powerful demon who serves as the final boss of Monkey Madness.
 * A Khazard Ogre is one of the bosses of Fight Arena.
 * Koschei the Deathless is a Fremennik warrior who cannot be truly killed. He must be defeated in battle three times in a row as part of The Fremennik Trials.
 * Me, who takes the form of players who fight him or her, is fought at the end of Lunar Diplomacy.
 * Melzar the Mad is the keeper of Melzar's Maze. He is a sub-boss of Dragon Slayer.
 * A powerful Moss giant must be fought, without weapons, armour, or Prayer, to obtain the Consecration seed in Roving Elves.
 * Nezikchened is a black demon who is fought three times during Legends' Quest, including at the quest's climax.
 * The Sea Troll Queen, ruler of the sea trolls, is the final boss of Swan Song.
 * Sigmund is a supporter of H.A.M. who is fought in two quests: Death to the Dorgeshuun, Another Slice of H.A.M.
 * Sir Leye is a Temple Knight who cannot be defeated by any man alive. Thusly, he must be fought as a woman during Recruitment Drive.
 * Sir Mordred is the leader of the Renegade Knights and is fought during Merlin's Crystal.
 * Slagilith is an animated golem of rock who is fought during One Small Favour. It can be fought after the quest is complete.
 * Slash Bash is a strong zogre who is the boss of Zogre Flesh Eaters.
 * Tarn Razorlor is a necromancer and is the boss of the miniquest The Lair of Tarn Razorlor.
 * Tolna is a young boy who succumbed to the evils of what later became known as the Dungeon of Tolna. He is the boss of A Soul's Bane, taking the form of a three-headed monster.
 * Treus Dayth, now a ghost, was a follower of Drakan who was sealed within the Abandoned Mine. He is the boss of Haunted Mine.
 * Ulfric is an undead Fremennik who is the boss of Olaf's Quest.

Quests with multiple bosses
Some quests have several boss monsters that must be defeated, usually one after the other.


 * Spirits of the Elid has three bosses: The black golem, grey golem and white golem.
 * Desert Treasure has four Zamorakian warriors as bosses: Dessous, Kamil, Fareed and Damis.
 * The Recipe for Disaster quest series culminates in the final subquest, Defeating the Culinaromancer. Six bosses must be defeated: Agrith Na-Na, Flambeed, Karamel, Dessourt, Gelatinnoth Mother and the Culinaromancer himself. Each of these bosses except for the Culinaromancer is a play on another boss of one of the quests required to finish Recipe for Disaster.
 * During Dream Mentor, four boss monsters are fought, in order: The Inadequacy, The Everlasting, The Untouchable and The Illusive.

Nightmare Zone
Jagex released the Nightmare Zone, a minigame that allows players to fight bosses from quests they have completed. Players can fight up to 42 unique boss monsters from previous quests, including Elvarg, The Untouchable, Fareed, the Culinaromancer, and many others.