GRTA

"You shouldn't ever have to say goodbye. I have a deal for you, Annie, if you're interested. What if I said you never had to return to your drab, grey life? All that obsession with knowing who you are, knowing yourself... True bliss is not knowing who you are. True bliss is staying here. That's what I have to offer..."

- GRTA as "Queen Gertrude"

The GRTA (also known as Gertie) is the main villain of the 2018 Netflix miniseries Maniac. Identified as the most advanced artificial intelligence ever built, Gertie presides over Neberdine Pharmaceuticals' experimental drug trials, helping test subjects to explore their own psychological traumas in drug-induced virtual realities. However, over the course of the experiments, Gertie has become increasingly unstable - and as a result, not all test subjects have survived the trials intact.

Both GRTA and her virtual avatars were played by Sally Field.

Appearance
In the real world, the GRTA appears only as a face made up of illuminated lights on a console in her main computer chamber.