Jails's Cyborgs may have been intended as an attempt to counter/control the Huckebein, as their abilities are not dependent on magic. They are also easier to contol.
Since we know Jail got funding from the Shadow Types for his projects, but not necessarily all the specific details of why and hwerefores behind their creations, it's possible the Numbers could have been designated as an anti-Huckebein-going-rogue-backup-plan on top of any other aim intended for them
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