Kragnos
Kragnos, the god of earthquakes and a central leader for the warmongering tribes of destruction.
History
Age of Myth
Kragnos was born a mortal member of a race of centaurs living in Ghur called the Drogrukh.
Being a short-tempered guy even then, Kragnos started out his violent path to godhood beating the shit out of his brother for the right to the same Drogrukh mare they were both down for. When the Drogrukh elders reprimanded him for it, Kragnos got fed up and decided to strike out with his four best bros.
Over the years he would accomplish many legendary tasks, some of them by himself, some with his companions. Among which were his crafting the Dread Mace out of the heart of a mountain (which knowing all the living mountains that are in Ghur is probably literal), climbing the Beastgrave peak and claiming the legendary Shield Involatile, which he made from a disc of rock that Gorkamorka himself had broken a tusk on, leaving it with the power to eat spells. His actions earned him the attention and admiration of the Orruks, who named Kragnos "Da Boss Trampla" and his shield "Tuskbreaker". He also started killing and eating every big and tough critter the realm had to offer and wiping out any of the nascent Empires that were starting to emerge in Ghur, thus earning him the title of "The End of Empires".
The few local human tribes who survived his rampage began to see him as a god of Earthquakes while the numerous races of Destruction quickly decided he was a pretty cool guy and began worshipping him in addition to Gorkamorka (aided by the fact that Gorkamorka himself developed a healthy respect for the guy after Kragnos' attack on the Draconine Empire, see below). Given how the power of belief works where Orruks are concerned... Kragnos being the god of Earthquakes became a self-fulfilling prophecy. Humans and Orruks started killing monsters and leaving them as sacrificial offerings to Kragnos, and Kragnos actually absorbed more strength from eating the remains of beasts along with offerings of Amberstone. He was happy to be worshipped as a god and co-exist with the greenskins, because the greenskins like him believed that "might makes right". The fact that this stopped the greenskins from attacking the Drogrukh kin was lost on Kragnos.
Kragnos and his companions later arrived at the Draconine empire. This was the civilization of the Draconith, a race of reptilian humanoids - separate from the Seraphon - renowned for working with dragons, worshipping Dracothion and their prowess with magic. The Draconine Empire had been allies of the Drogrukh, having fought together against their mutual foes the Dragon Ogors, though there wasn't a formal alliance, just a non-aggression pact with Kragnos' father Gorgos and mutual respect.
But at that point the proud and headstrong Kragnos didn't care about the accord anymore. He saw the Draconith as a challenging foe worthy of his new power. He and his four companions waged war on them, the act of aggression winning the approval of the belligerent god Gorkamorka. The war waged on, with many Draconith dying and Kragnos and his companions taking many wounds. Eventually the Draconith fell back before Kragnos' might... but they gathered their remaining strength to kill Kragnos' four companions, then withdrew from the ruins of Draconith empire to wipe out the Drogrukh cities of Donse in revenge. Ignorant of the destruction of Donse, Kragnos was devastated and enraged by the deaths of his four companions and destroyed everything he could find of the Draconith, determined to erase them from history for the deaths of his friends.
Kragnos' attempted genocide of the Draconith was the last straw for the forces of order, they deemed Kragnos too dangerous to remain. Several Draconith sorcerers made contact with Lord Kroak and, in exchange for giving Kroak the last of their eggs. Kragnos was sealed away in a mountain, which was then isolated from time by an alliance of sorcerers led by the legendary Lord Kroak. They had the backing of the godbeast Dracothion as well, who personally restrained Kragnos in his coils as the sorcerers and Kroak wove their spell.
Soul Wars
The only notable thing that happened at this time was that Nagash's Necroquake left residual energies that, when combined with their opposite in life, would have devestating consequences on Kragnos' prison.
Broken Realms
During the Broken Realms crisis, the energies of Alarielle's Rite of Life reacted with the energy of the Necroquake and unintentionally broke the spell of Kragnos' prison, allowing him to smash his way free.
Unaware that any time had passed since his imprisonment Kragnos emerged to discover his race had been wiped out entirely. He also discovered that the mortal city of Excelsis had been built on his tribe's former lands. He then began a rampage across Ghur fueled by his anger at captivity and the loss of his people.
Along the way, Kragnos encountered several Mega-Gargants, the first to join him did so after Kragnos killed four other Mega-Gargants who were with him. Then Kragnos ran into Gordrakk's WAAAGH! along with some Gloomspite Gitz lead by the Loonking Skragrott. The armies fight for a bit, with Kragnos fighting Gordrakk and his Maw-Krusha Bigteef before Kragnos triggered a rockslide that buried the three of them. After fighting their way out, Kragnos shrugged and invited the Orruks to help him on his quest to destroy Excelsis...something they were more than happy to do given they were already on their way to do just that when they ran into him.
When they get to the city, Lord Kroak's enchantment shattered Gordrakk's godbeast-skull battering ram, but couldn't stop Kragnos, who proceeded to smash his way through the Southern Wall of the city while the defenders are distracted by Gordrakk's attack on the North Wall. He then causes a whole shitload of damage before finally smashing open the city's main gate. This combined with the city’s Ogor mercanaries revealing themselves to be agents of the Loonking and turning on the defenders allowed the Orruk's and their allies to flood into the city.
Things were looking bleak for the city until help unexpectedly arrived in the form of Morathi who rolled up in a Black Ark along with an army of Daughters of Khaine. After dealing with some Mega-Gargants attacking the city docks Morathi sicced her second serpentine body on Kragnos to distract him while her elven body sought Lord Kroak who was trying to help out the city with his magical powers.
Finding Kroak and realizing Kragnos is too powerful for any of them to kill, Morathi convinced Kroak to send Kragnos away where he can be someone else's problem. Kroak opened a massive portal which Morathi cast an illusion on to trick Kragnos into thinking it was the remanants of his sworn foes, the Draconith Empire. Being about as dumb as he is big, Kragnos fell for the illusion and charged through the portal, which proceeded to drop his ass on the far side of Ghur. Without his presence in the city the Orruk lines begin to crumble allowing the defenders to force them into retreating.
Meanwhile Kragnos, upon realizing he'd been duped, proceeded to take out his frustration on the local Chaos fortress while a bunch of local Orruks, who happened to be an isolated tribe of Kragnos worshippers, look on in awe at the spectacle.
Tabletop
Kragnos can be taken by any DESTRUCTION aligned army.
This big boy is the epitome of the term "mighty glacier". He has a 2+ save, 18 wounds and his shield Tuskbreaker to keep himself alive. Tuskbreaker makes it so if he beats the spells casting value on a 3D6, the spell won't work on him. Note, that’s casting value, not casting roll, so Teclis, Nagash, Kroak? None of their bonuses matter.
Despite his slow speed he hits like a runaway train, fitting for the god of earthquakes. His weapon, The Dread Mace, hits harder than Ghal Maraz itself, wounding on 2's, -3 rend and does 4 damage with each attack, and he has six attacks which doesn't diminish if he takes damage. He can also bash enemies with his shield for three Rend -2, D3 damage hits and hit with his hooves for 2 damage at -1 rend up to six times. He also re-rolls charges and hit rolls against units with the Stardrakes, Drakes, Dracoths and Dracolines keyword due to his hatred of dragons (but somehow not Zombie Dragons).
And then there's his ultimate ability "Rampaging Destruction". After the charge, roll a dice for each enemy unit within 1" or an enemy monster within 1"; if the former is chosen, on a 2+ each unit suffers D6 Mortal Wounds, but monsters get it worse if you choose a the latter. On a roll of 7 nothing happens, otherwise the monster suffers a number of mortal wounds equal to the numbers rolled on the dice multiplied... meaning a monster could potentially suffer 36 MORTAL WOUNDS, AND THAT'S "BEFORE" KRAGNOS ATTACKS IN COMBAT!
As the god of earthquakes, he has a roar that can burst eardrums, level buildings and make Bloodthristers look like they have laryngitis. Whenever he suffers wounds, roll a dice for each unit and defensible terrain feature within 6". If the number is equal to or greater than the score on the table (the required score decreasing as Kragnos takes wounds), enemy units within 6" suffer D3 Mortal Wounds and that defensible terrain feature is demolished and no longer defensible (any models garrisoning it are slain if they roll a dice roll of 1).
He also buffs the bravery of all DESTRUCTION units within 12" by 1.