The design of the Borg prosthetics as used in "I, Borg" was an evolution from those previously seen in the series. Michael Westmore's make-up team developed a removable eye-piece for Hugh, using magnets to allow the actor to remove it as required by the script. The team wanted the eye-piece to be dramatic, but decided against using a laser as this had been previously used for Locutus of Borg. They instead opted for a hologram and a series of LEDs that were powered by a battery pack built into the costume and mounted on the actor's back. The arm piece was also redeveloped; rather than a single "club" piece as previously used for the Borg, it was built from a foam-rubber glove with attachments.