Gurgruk
Gurgruk da Spleenrippa was an Evil Sunz Speedboss, whose Speed Freak hordes resided on the Octarius System world, Dakkazot.[1a]
History
He led them into battle against the invading Tyranids of Hive Fleet Leviathan, during the Octarius War in M42. This continued, even after the Swarmlord led a new invasion, which ultimately failed to destroy the Orks. However after the Swarmlord was killed by the Overfiend, it reemerged amid a group of Leviathan biofleets that had finished devouring several nearby worlds[1a]. The Swarmlord then used these fleets to invade the Octarius System again, near the same time as the Pankallis Sub-sector was being attacked. With numerous new swarms of Leviathan's Tyranids at its command, the Swarmlord finally succeeded in conquering the System. Gurgruk and his Speed Freak hordes met their end, after being attacked by waves of Tyranids both above and under Dakkazot's surface. Winged megaflocks attacked the Orks and fired in such numbers, that the Speed Freaks were unable to dodge their fire. Meanwhile, Tyranids beneath Dakkazot's surface wiped out vast numbers of Gurgruk's hordes. This in turn, caused countless crashes amongst the Speed Freaks, which led to a huge amount of infighting within the crowded tunnels. Without the ability to use their speed, Gurgruk's surviving Orks became trapped and closely packed together. Which turned them into the perfect prey for Leviathan's Tyranids.[1b]