Felman Lux

Felman Lux was the grandson of Strackman Lux, the human who built the Library. After the library computer locked down the Library it took three generations of the Lux family to decode the seals, so it was Felman Lux who assembled an expedition to find out what had gone wrong. He travelled to the planet with Professor River Song and other archaeologists. His personal assistant was Miss Evangelista.

At first his intentions seem to (vainly) be protecting his family's patent for the Library. Later however it is revealed he cares for Charlotte (CAL) "because she's family", and wanted to protect her.

He was the only one not to die. (DW: Silence in the Library/ Forest of the Dead)