- "The kyber. Following up on the original research done by Marsabi?"
- ―Wilhuff Tarkin, to Galen Erso
Marsabi was an individual who did research on kyber crystals. Marsabi's research was followed up to a degree by Galen Erso, however he was more interested in what Cuata had been doing on Mygeeto and Christophsis before the Clone Wars placed them in danger.
- Catalyst: A Rogue One Novel (First mentioned)