The Zenia family collar.
An item originally intended to stop Alice from suicide that'll put a stop to their experiments. Each compartment of the collar held a special blend of Healing blood at the perfect mix. Enough so that she didn't die, not enough so that it gave her power to break out.
After a while, they noticed that these collars could be put to. . . Other uses outside of simply preventing suicide.
Of course, keeping the rather bulky design would be a terrible weakness to expose so the inventors made some adjustments instead.
While keeping the primary function of keeping their Hybrids in check with some additional modifications, it now also functioned as a limit break.
To push them beyond the normal functioning capacity.
After all, unlike Alice, they were still unable to fully access the power that her blood could grant.
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Pulling the trigger and removing the limiter around the collar, the device revealed itself in full before stabbing spikes into the woman's neck.
