Permaglass was a transparent substance used in the making of windows. The windows of Palpatine's apartment at 500 Republica were made of it, as were the windows at the LiMerge building in The Works where Palpatine met with Count Dooku prior to and during the Clone Wars.
- The Old Republic, Blood of the Empire Act 2: The Broken World
- Republic Commando: Triple Zero
- Labyrinth of Evil (First appearance)
- In His Image
- Legacy of the Force: Bloodlines