Arata

Arata: Arata proto or Arata β 0.8 (アラタベータ, Arata Bēta 0.8) is an auto equipping quinque made from the Kakuja of the Corpse Collector (骸拾い, Mukuro Hiroi) Arata Kirishima. It enhances the users physical abilities beyond those of a normal human so that they are able to keep up with S class and SS class ghouls, even though momentarily. It was first used by special investigators Kuroiwa and Shinohara against Yoshimura. The latter of the two investigators even commented that they would've been already dead in the fight, if they did not have Arata. The armor also has a disadvantage, being that the burden it carries on the body is too great to use for long. Ken Kaneki, though, had destroyed the armour when he had gone berserk against Shinohara.

Arata proto • Ⅱ (アラタproto•弐) is an armor with much greater power and has a more immense burden given to Amon to fight Kaneki. But, even it was not able to stand against Ken Kaneki in his Kakuja form.