The Ghost aka "The Hand" as sometimes referred to by fans is a recurring character in the Interface series. Little is known about her. She is voiced by Christa Elliott.
The Ghost is a reincarnation of Henryk's daughter after her death of old age. In Episode 20, the cerebral electricity released form her corpse can be seen shaping into The Ghost.
In her previous life, she expressed fear and awe towards her father's eternal youth as she and members of her family grew old; statements that Henryk frequently has flashbacks to.
The Ghost appears as a shrouded head atop a giant green hand. She has pink horns that appear to function similarly to Mischief's 'eyebrows' which buzz with cerebral electricity.
Her appearance as a human is unknown, but she likely had pale skin and brown hair like the rest of Henryk's relatives.
The Ghost seen with Henryk's geat-granddaughter
The Ghost reaching out to Henryk's granddaughter in reference to 'The Creation of Adam'
The Ghost as seen on TV in Henryk's hospital room
The Ghost rescuing Henryk's granddaughter from the scene of the car crash
A detailed shot of The Ghost's face