- "The decision to transfer the population to sky-disks was controversial but has paid off in the end."
- ―The Prime Minister of Protobranch
Antigrav platforms, also known as repulsor platforms or sky-disks, were city-sized repulsorlift-powered platforms used to hold the population of the planet Protobranch. When a solar storm hit Protobranch, the repulsor technology failed, and the cities fell to the ground.
- Dooku: Jedi Lost (First appearance) (Appears in flashback(s))
- Dooku: Jedi Lost script (Appears in flashback(s))