Thunder Warriors - Survivor Fates: In the final years of the Unification Wars, a group of at least two dozen surviving Thunder Warriors under the command of the former Legiones Cataegis IV Legion Primarch Ushotan, took part in the Imperial Palace Coup unleashed by Grand Provost Marshal Uwoma Kandawire in an attempt to hold Captain-General Constantin Valdor of the Legio Custodes to account for the secret destruction of the Thunder Warriors. The surviving Thunder Warriors participated in the attempted coup to seek revenge against the Legio Custodes for their betrayal and to find an honourable death in battle rather than simply waiting for insanity or metabolic failure to claim them. The rebels were all massacred by the deployment of the Space Marines in their very first openly-recognised engagement, while Ushotan was slain in personal combat by Valdor. Bands of Thunder Warriors continued to exist in hiding however, with some escaping off-world. These were later hunted down and destroyed by the I Legion of the Legiones Astartes, the future Dark Angels.Solar decades later, in the early years of the Great Crusade, a small group of surviving Thunder Warriors calling themselves the Dait'Tar were among the renegades who had initiated the Cerberus Insurrection. The Emperor despatched the XII Legion, the War Hounds, later known as the World Eaters, to quell the uprising and punish the rebellion. Despite their physical decline, and being severely outnumbered by one of the most physically powerful of the Space Marine Legions, the Thunder Warriors managed to slaughter four to five times their number of Astartes. Despite their efforts, the insurrection was still put down after several solar hours of intense, close-quarters fighting at which the XII Legion excelled.At least one Thunder Warrior survived to the time of the Horus Heresy in the early 31st Millennium. This was the famed Thunder Warrior hero of the Battle of Mount Ararat, Arik Taranis, who had taken many names in the interim, including Babu Dhakal. Taranis had learned some of the techniques the Emperor had used to create him and then tried to make use of them himself to create a new army of Thunder Warriors under his command. He suspected that the Emperor had deliberately engineered his kind with a limited lifespan, though he personally hoped it was simply a defect in the genetic-engineering protocols; Thunder Warriors that did not die in battle suffered from cellular degeneration, metabolic collapse or mental instability, and often had relatively short lifespans. Eventually, after another Thunder Warrior, Ghota, encountered a group of Traitor Marines known as the Outcast Dead and slew one of its members, Taranis was able to cure the genetic instability of the Thunder Warriors using , though not before suffering considerable degeneration himself.Four Thunder Warriors who survived the cull served as gladiators in the depths of the arena known as "The Maw," near the slums of the Outer Palace region of the Imperial Palace known as the Swathe, for despite their ongoing physical deterioration they were still mighty warriors. They had been kept alive by Tarrigata, a former astropath, who served as their master and helped keep them alive through transplanting their organs with those of deceased Thunder Warriors. One of their number, Kabe, eventually died after being incapacitated in a gladiator battle against a Chrono Gladiator, before being ceremonially executed by a fellow Thunder Warrior.Another, Gairok, became mentally unstable and was slain when he attacked one of the other Thunder Warriors. The third of the group, Vezulah Vult, died fighting a Demonically-possessed Alpha Legion Heretic Astartes, after being blinded by the Legionary's acidic spit and then eviscerated. The of the Thunder Warrior gladiators, Dahren Heruk, was given an honourable death by a Custodian after he defeated the possessed legionary and saved the Custodian's life.It is possible that the World Eaters Space Marine and later Blackshield Endryd Haar was a Thunder Warrior or another kind of pre-Astartes genetically-augmented supersoldier who was successfully transformed into a Space Marine. He was far larger, stronger, and quicker than other Space Marines; furthermore, he was extremely brutal and mentally somewhat unstable despite lacking the cranial implants of the Butcher's Nails. Malcador the Sigillite singled him out as a special case. Haar himself confirmed that he had fought alongside the Emperor in the Unification Wars and called the Dait'Tar "brothers."