One of the gold-skinned synthetic inhabitants of Coppelius Station, who is among those receiving Jean-Luc Picard and his companions when they reach the android settlement in 2399.
Arcana is played by Jade Ramsey in Et in Arcadia Ego, the two-part finale of the first season of Star Trek: Picard. She belongs to the community of androids created on Coppelius by Bruce Maddox and Altan Soong from the legacy of Data.
Like Sutra, and unlike the more human-looking Soji, she has golden skin and yellow eyes that recall Data's own appearance. She meets the travellers from La Sirena on their arrival at the station alongside her fellows, to whom Picard is known as Data's captain and friend.
Arcana shares in the community's debate over how to answer the Romulan fleet, and in its decision, after the killing of Saga, to build a beacon calling for help from beyond the galaxy. She survives when Soji shuts the beacon down.