As a new race of one-eyed ghouls they have the previously unheard of ability to choose either to activate one or two kakugan at once. It is estimated nearly a hundred individuals were produced, each enhanced to be superior trackers and adept ghoul exterminators. Kichimura compares them to Ken Kaneki, the original prototype on which they are all based. In battle, their rinkaku kagunes were shown to be much longer, thicker and capable of generating stronger and heavier blows than that of most ghouls.
- Their name is written using an invented kanji, created by doubling the radical 歹 meaning "death."