Dagannoth Rex is the melee Dagannoth King found on Waterbirth Island. He is completely immune to ranged and melee. Dagannoth Rex is the only dropper of the berserker and warrior rings. He, along with the other Dagannoth Kings, can drop the dragon hatchet.
Obtaining all unique drops from the Kings will unlock the
[Name] Bukalla's Heir
Dagannoth Rex is extremely weak to magic attacks, specifically fire spells. Whoever is killing him may want to use the southeastern side, as he can be easily fought there due to his large size.
Many players trap him as his melee attacks will be unable to attack the player. There are many safespots around the arena, but it's best to use a few if you only want to kill him. The best ones would be on the eastern side, as no kings will interfere unless they have been alerted to your presence (e.g. a player moves to your spot with Supreme on him, which makes you also get attacked with ranged).
As a result of Dagannoth Rex being able to be safe spotted, he is the easiest Dagannoth King to fight.
100% drops Edit
Main drops Edit
Coins 3,210–13,034 Common 3,210–13,034
Berserker ring 1 Rare (1/128)  80,697
Warrior ring 1 Rare (1/128)  28,274
Dagannoth Kings teleport 1 Uncommon 19,632
Dagannoth bones 5–11 (noted) Uncommon 27,780–61,116
Keg of beer 1 Common 3,640
Rock-shell legs 1 Rare 36,636
Rock-shell plate 1 Rare 37,001
Mithril kiteshield 1 Common 3,976
Mithril platebody 1 Common 2,846
Mithril full helm 1 Common 2,224
Mithril plateskirt 1 Uncommon 2,238
Rock-shell helm 1 Rare 20,425
Super attack (3) 2–3 Uncommon 6,994–10,491
Super strength (3) 2–3 Uncommon 13,856–20,784
Dragon hatchet 1 Rare (1/128)  1,005,054
Rune warhammer 1 Uncommon 23,522
Rune platebody 1 Rare 37,768
Berserker helm 1 Uncommon 45,732
Warrior helm 1 Uncommon 45,316
Fremennik helm 1 Uncommon Not sold
Fremennik shield 1 Uncommon Not sold
Fremennik blade 1 Rare Not sold
Rare drop table 1 Rare Not sold
Tertiary drops Edit
^ Has a base drop rate of 1/2,500 with a
threshold of 1,500.
Rare drop table drops Edit
This monster has access to the rare drop table. Luck-enhancing items such as a ring of wealth or luck of the dwarves are not required to access the table.
Show/hide rare drop table
Coins 250–500; 3,000 Common 250–3,000
Uncut sapphire 1 Common 970
Uncut emerald 1 Common 2,024
Uncut ruby 1 Common 1,991
Uncut diamond 1 Common 3,821
Uncut diamond 45–55 (noted) Rare 171,945–210,155
Loop half of a key 1 Common 18,110
Tooth half of a key 1 Common 21,443
Uncut dragonstone 1 Uncommon 11,317
Uncut dragonstone 45–55 (noted) Rare 509,265–622,435
Dragon longsword 1 Common 56,801
Dragon spear 1 Rare 36,867
Battlestaff 180–220 (noted) Rare 1,081,260–1,321,540
Rune javelin 5 Rare 905
Rune platebody 1 Uncommon 37,768
Rune platebody 15–25 (noted) Rare 566,520–944,200
Shield left half 1 Rare 64,779
Dragon helm 1 Uncommon 58,809
Rune arrowheads 113–137 Common 28,589–34,661
Onyx bolts 135–165 Very rare 1,057,455–1,292,445
Chaos talisman 1 Rare 1,506
Nature talisman 1 Rare 1,179
Water talisman 65–82 (noted) Rare 364,585–459,938
Earth talisman 65–82 (noted) Rare 100,815–127,182
Fire talisman 25–35 (noted) Rare 30,075–42,105
Raw lobster 135–165 (noted) Common 24,300–29,700
Raw shark 225–275 (noted) Uncommon 268,200–327,800
Big bones 72–90 (noted) Uncommon 15,984–19,980
Dragon bones 180–220 (noted) Rare 269,280–329,120
Coal 200–1,100 (noted) Uncommon 25,800–141,900
Gold ore 90–110 (noted) Common 17,820–21,780
Adamantite ore 180–220 (noted) Uncommon 268,740–328,460
Adamant bar 14–16 (noted) Common 41,888–47,872
Adamant bar 135–165 (noted) Rare 403,920–493,680
Runite ore 90–110 (noted) Rare 1,057,860–1,292,940
Rune bar 3 (noted) Common 41,589
Rune bar 45–55 (noted) Rare 623,835–762,465
Grimy torstol 90–110 (noted) Uncommon 340,470–416,130
Grimy snapdragon 90–110 (noted) Uncommon 231,840–283,360
Super restore (4) 45–55 (noted) Uncommon 257,040–314,160
Prayer potion (4) 45–55 (noted) Uncommon 189,225–231,275
Lantadyme seed 14–16 Uncommon 8,302–9,488
Dwarf weed seed 14–16 Uncommon 8,932–10,208
Magic seed 4 Uncommon 402,276
Palm tree seed 10 Rare 1,699,870
Flax 450–550 (noted) Common 15,750–19,250
Molten glass 45–55 (noted) Common 11,745–14,355
Soft clay 450–550 (noted) Uncommon 234,450–286,550
Yew logs 68–82 Uncommon 13,192–15,908
Yew logs 675–825 (noted) Rare 130,950–160,050
Teak plank 45–55 (noted) Uncommon 32,805–40,095
Mahogany plank 270–330 (noted) Rare 399,600–488,400
Blurberry special 1 Uncommon 1,991
Vecna skull 1 Very rare * 192,600
Hazelmere's signet ring 1 Very rare * 1,804,467,420
Brawling gloves (Melee) 1 Very rare Not sold
Brawling gloves (Magic) 1 Very rare Not sold
Brawling gloves (Ranged) 1 Very rare Not sold
Brawling gloves (Agility) 1 Very rare Not sold
Brawling gloves (Cooking) 1 Very rare Not sold
Brawling gloves (FM) 1 Very rare Not sold
Brawling gloves (Fishing) 1 Very rare Not sold
Brawling gloves (Hunter) 1 Very rare Not sold
Brawling gloves (Mining) 1 Very rare Not sold
Brawling gloves (Prayer) 1 Very rare Not sold
Brawling gloves (Smithing) 1 Very rare Not sold
Brawling gloves (Thieving) 1 Very rare Not sold
Brawling gloves (WC) 1 Very rare Not sold
Crystal triskelion fragment 1 1 Very rare Not sold
Crystal triskelion fragment 2 1 Very rare Not sold
Crystal triskelion fragment 3 1 Very rare Not sold
Universal drops Edit
Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Key token 1 Rare Not sold
Baroo Quality ( 35) - Defeat a Dagannoth King whilst wearing full yak-hide armour and a Fremennik round shield.
Dagannoth Traffic Wardens ( 40) - Defeat the Dagannoth Supreme with each different colour variation of Balmung.
They All Fell Down ( 40) - Defeat the Dagannoth Kings all within 5 seconds of each other.
Love live the Kings! ( 0) - Obtained a collection of unique drops from the Dagannoth Kings.
Dagannoth Rex wearing a santa hat during Christmas.
"Rex" is a Latin word meaning "king", referring to him being one of the three Dagannoth kings.
The Dreadnip has a far lower chance of successfully hitting Dagannoth Rex than any other Dagannoth King.
Dagannoth Rex is the only Dagannoth King that is not stun immune.
Prior to their Graphical Update on 19 September 2016, Dagannoth Rex, along with Dagannoth Supreme and Prime, had a hook-shaped left arm, although Rex is the only one who used it to attack opponents.