
The control system may be
INVISIBLE to us.
Westworld Season 2, Episode 10

Invisible, unwanted and unloved...
The Big Bang Theory Season 4, Episode 22

...and shouts, "Who wants
to take a ride in my INVISIBLE plane?"
The Big Bang Theory Season 4, Episode 5

that the Invisible Girl
is standing there with us.
The Big Bang Theory Season 7, Episode 14

...this is for the INVISIBLE kids.
The Big Bang Theory Season 8, Episode 22