Dune: Prophecy is slowly revealing its true villain as each episode passes and, in Episode 4, we finally get a look at its robotic form.

Prophecy, the HBO series’ deep dive into the Bene Gesserit’s history is very much an exploration of the Kwisatz Haderach’s origins. In Valya (Emily Watson) and Tula Harkonnen (Olivia Williams), you can see flashes of the Machiavellian villainy their distant descendants are known for.

Sisterhood above all” is the motto of Valya and Tula’s secretive organization, but its meaning seems to depend on which sister is saying it.

Episode three of Dune: Prophecy looks back at Valya and Tula's past, providing the show's richest character drama yet.

Valya uses her Harkonnen blood to regain access to the Landsraad, while on Wallach IX, the Acolytes share a troubling dream.

Dune: Prophecy episode 5 is the penultimate episode of the season and will feature Desmond Hart declaring war on Valya Harkonnen's sisterhood.