Celestra is a female human engineer encountered on the planet Ord Mantell. Along with her protocol droid S3-E3 she was dispatched from Fort Garnik with instructions to repair a malfunctioning power generator.
The engineer Celestra and her droid, S3-E3, were tasked with performing repairs on the generators that supply Fort Garnik with power. When the two arrived at their work site, however, they were attacked by separatists. Both managed to escape these saboteurs but Celestra and her droid were separated.