Complex sentence: Scrum is the crew's technician, Cuttin' Edge is a former Space Marine who was dishonorably discharged, Stella was the ship's Medic, and the other crew member, Koral, is an humanoid alien, whose planet and people were destroyed by the Daleks.
Split into simpler sentences: Scrum is the crew's technician, Cuttin' Edge is a former Space Marine who was dishonorably discharged and Stella was the ship's Medic. The other crew member, Koral, is a humanoid alien whose planet and people were destroyed by the Daleks.