Yk'Lagor the Thunderous

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DungeoneeringTwilight of the Gods
Yk'Lagor the Thunderous icon.png
Yk'Lagor chathead.png

Yk'Lagor the Thunderous is the final Dungeoneering boss monster encountered on the occult floors. He is found on floors 45 to 47 of Daemonheim. A Dungeoneering level of 89 is required to fight him. He is a high-ranking Kal'Gerion demon and one of Kal'Ger the Warmonger's generals.

History[edit | edit source]

Early history[edit | edit source]

Yk'Lagor is actually Yakla, an Aughra dragonkin who projected their spirit into the native abyssal life and eked out an existence until another Aughra, Kalger, rallied them into Infernus, where they projected themselves into new demon bodies. Sometime later, Yk'Lagor and the others were overthrown by the Chthonians, but they survived and languished in the Kal'gerion realm. When the Chthonians themselves were banished to the Abyss, Yk'Lagor and the others exacted revenge on them, making them their servants again. The remaining that didn't bend to their will continued serving the Zarosian dukes.

Arrival to Gielinor and imprisonment[edit | edit source]

When Bilrach used portal magic to contact the Kal'Gerions, Yk'Lagor was one of the demons who broke through the portal and fought Bilrach's forces. During the battle, he toppled and taunted a behemoth. Although the Kal'Gerions were welcomed by Bilrach after having proven his superiority to them, Yk'Lagor fell into disfavour after demanding Bilrach to bring him more troops from the Infernal realms after he himself had vastly thinned out his own troops by making them kill each other. Bilrach did not look kindly upon it and imprisoned Yk'Lagor and had his power bleed from him for almost four centuries. It is not known if this was part of his punishment, but a group of mysterious mages started to siphon the power from the subdued demon to empower themselves, however after just a few mages were killed, Yk'Lagor regained enough strength to break free from his magical bond, killing all the mages with one vicious blow before turning on those who set him free.

Searching for a cure[edit | edit source]

The following takes place during Twilight of the Gods.

Yk'Lagor eventually left Daemonheim and ventured into the Senntisten Asylum alongside Cyrillus and Dahaka to search for a cure against Superimposed Personality Disorder (SIPD) after many demons began to suffer from its effects. They tried searching the asylum for clues but had little success. Sometime after the battle above ended, the World Guardian began to investigate sightings of a strange demon, leading them to Gregorovic and Naressa. They ventured into the asylum, only to be caught by one of their subordinates and brought them to the trio.

Yk'Lagor demanded an explanation for how a human, demon and dragonkin were working together when Dahaka recognised Gregorovic as a servant of Sliske. This name caused Naressa to realise that Dahaka was actually the Aughra elder, much to her surprise. Naressa then recognised Yk'Lagor as Yakla, horrified to learn that the Aughra had implanted their spirits into various lifeforms to survive. Yakla proceeded to explain what had happened after they had been cursed.

After the World Guardian returned with an acceptable cure, Yk'Lagor and the others returned to the Abyss to cure those suffering from SIPD.

The fight[edit | edit source]

Unlike other bosses who are immediately ready to fight when the player enters the room, Yk'Lagor must first be freed before he can be fought. In his room, there are eight mysterious mages that are subduing Yk'Lagor with a magical barrier. After attacking four of the mages, the demon will roar "My turn!" and break free from the barrier, causing the entire dungeon to shake and the ensuing shockwave will kill the remaining mages; the shockwave does not harm the player(s) at all. Immediately afterwards, he begins the battle with his magical drag attack.

Yk'Lagor's standard melee attack involves slashing the player if the player is standing in melee-range. The demon will attack with a fire based magical attack if no players are next to him which can drain prayer points and ignores protection prayers.

Yk'Lagor has two powerful special attacks which he alternates between. As mentioned above, he uses a magical drag attack when he shouts "Come closer" and pulls the players across the room, healing 15% of his health per player dragged in. This attack will stun the player, drain their prayer points and disable any prayers they had active. The attack can be avoided by hiding behind any of the four pillars in the boss room. Use Freedom if caught.

His second special attack is an earthquake that is indicated when he shouts "This is..." before jumping into the air, followed with a scream of "TRUE POWER" when he lands and cracks the floor. This attack can deal over 12,000 typeless damage to all players who are not behind the pillars.

Gatestone teleport, Group Gatestone Teleport, and Gatestone 2 teleport can only be used if standing behind one of the pillars. Attempting to teleport from anywhere else in the room gives the message "You can't teleport here". Thus, gatestones cannot be used to evade his special attacks.

Strategy[edit | edit source]

Yk'Lagor's special attacks can be avoided by running behind a pillar as soon as the text appears above his head or you hear his voice. To hide more easily from the boss's special attacks, it is recommended to use either ranged or magic.

Apart from his special attacks, Yk'Lagor will behave in a pattern depending on the players' positions. As long as one person is close to him, Yk'Lagor will use his melee attack, which is very fast and damaging.

As long as one person stands away from him, he will use his magic attack, which hits everyone in the room. You will still get hit even if you stand behind a pillar, but only if he can target a player in his range, meaning if one player is not hiding behind a pillar, all players will get hit.

Yk'Lagor trapped by a magical shield.
Yk'Lagor killing the mages.
Yk'Lagor's magical drag.
Yk'Lagor punching the ground.
Yk'Lagor's magical attack.

Drops[edit | edit source]

  1. ^ Only dropped on floor 45

Quotes[edit | edit source]

Yk'Lagor's initial concept art. He has since been graphically updated.
Audio options icon.png
When bound
Audio options icon.png
My Turn!
When breaking free
Audio options icon.png
You dare steal my power?!
When killing the mages
Audio options icon.png
Come closer!
Before performing his magical drag
Audio options icon.png
This is... TRUE POWER!
When using his Earthquake special
Audio options icon.png
Another kill for the Thunderous!
After killing the player
Audio options icon.png
There is no escape!
If the player gets grabbed when trying to hide but is unsuccessful

Dialogue[edit | edit source]

Transcripts Yk'Lagor the Thunderous speaks in:

Update history[edit | edit source]

This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!
  • patch 13 August 2013 (Update):
    • Fixed some camera issues whilst fighting Yk'Lagor the Thunderous.
  • patch 25 August 2010 (Update):
    • Removed a couple of pillars in the Yk'Lagor the Thunderous boss room.

Trivia[edit | edit source]

Yk'Lagor breaking free.
  • One of the phrases the mages binding Yk'Lagor The Thunderous are chanting is "Heim crabs are awesome" backwards. (This was confirmed during the Q&A session at Runefest.)
  • With the addition of this boss, this is the first time voice acting has appeared in the game aside from the tutorial.
  • In Yk'Lagor's concept art, it is shown that his original title was "the Vociferous", which can be understood as a synonym for "the Thunderous" (a loud or noisy scream); he was also entitled as "Demon Prince".
  • Yk'Lagor introduced a trend in which his Magical Drag attack is used by many powerful monsters, not limited to Kal'Ger the Warmonger, a variation that Nextroll wizards, and Mother Mallum all use, and its sound effects are used in the Ancient ceremonial robes emote.
  • Yk'lagor used to have another special attack in which he created an area of explosions around him (similar to the ancient curse Wrath), but for some reason this was removed.
  • As shown in the video from Jagex's YouTube channel, there were 4 pillars on the northern and the southern part of the room. In the actual game, there are only 2 pillars on each side.
  • Currently there is a glitch where if a player dies at the same time as Yk'Lagor's magical drag special attack is used, the player may be dragged into the boss room from the start room.
  • Resonance used to work on his earthquake special attack.
  • Yk'Lagor is voiced by Mod Osborne.