Hastur

Among the octopus-like Kur, Hastur breaks from the usual mold of his kind. His head is oversized, the forehead threaded with prominent veins, while a pair of bulging eyes stay sealed shut above a tiny mouth. Where most of his race carry stubbier limbs, his own tentacles run thinner and trail far longer, giving him a profile that reads more like a jellyfish than the octopus his brethren resemble.

Greed defines him. Hastur treats anything that crosses his path as already belonging to him alone, seizing whatever sparks his interest and reacting with fury whenever someone wrecks what he has claimed. He carries out his people's campaign of planetary conquest, which he frames as hunting, with a cold and cruel streak. After Banga helped Bamora flee Sumer, he vowed to chase the child across the entire cosmos and crown the Sumerian pyramid with her severed head. He readily turns to mental cruelty as a weapon too, certain that torturing Aja in front of Banga would force her to open a portal to Earth. Convinced his species sits above every other, he writes off all galactic life as lower lifeforms and finds resistance baffling, unable to grasp why Kinta would keep rebuilding his mecha even as Hastur crushed the pilot core. Despite the contempt, he has a sharp eye for genuine strength, a talent that feeds his appetite for forging powerful exosuits out of formidable opponents.

Over more than a hundred years, Hastur directed a string of Kur conquests across the universe, including the raid on the homeworld of the alien who would later become his right hand. During the assault on Sumer, his unit caught Banga channeling the Sumerian pyramid to send the last surviving Sumerian child, Bamora, to Earth. Realizing only a Sumerian could trigger the portal, he threatened to torment her colleague Aja unless she sent the team after the fugitive.

Reaching Earth, the Advance Unit crushed the Serpo and claimed their data and technology, including intelligence on Okarun's kintama, while a signal from Bamora's exosuit, tripped by Jiji, drew them onward. Hastur later struck Okarun down with his suit's spatial-carving power to harvest the kintama as a battery for summoning the main fleet, only to be interrupted by Mantisian and forced to withdraw. Days afterward, the unit opened a warp gate for the incoming battleships, and Hastur, alongside the jet booster Kur and Ta Koshin Jo, clashed with Momo, Rokuro, and Bamora. He tore Bamora from her suit and ran his tail through her, then traded blows with Momo whose Moe Moe Tri-Beam matched his psychic assault and marked her as a true threat.

When Momo baited him into banishing her into his own dimension, her dimension-piercing beam shredded his suit from within, and Okarun finished it with a charging strike. Enraged, Hastur hijacked Bamora's exosuit and switched it to Slaughter Mode, only to face Kinta, who built a mecha from the Ayase house nanoskin. Their duel of swinging towers, Tokyo Tower against Tokyo Skytree, ended with Kinta and Bamora secretly riding his back to launch a brutal powerbomb. With the suit failing, Hastur staggered free, and since his kind cannot survive a foreign world's gravity unprotected, he almost certainly perished afterward.