A typical Borg has one eye replaced with a cybernetic
implant. Other modifications include subdermal armour,
skin modified to withstand vacuum, and personal forcefields.
The Borg 'Queen' encountered by the Enterprise-E is thought to be
a personification of the Borg collective, created to interact with
other species. She is one of the most heavily modified of the Borg.
This is Seven, formerly Seven of Nine, tertiary adjunct to unimatrix
zero one. Seven was abducted from the collective by the crew of the
USS Voyager and had most of her Borg implants removed against her will.
She is only the second person ever to be rescued from the collective.