Lareen

Lareen was a Thal spy sent to board the Dalek shuttle that had picked up Davros from the planet Necros. She used stealth technology to evade being detected, and was given two options to deal with Davros: either she could be his assassin or his enlightenment and freedom.

After the Dalek shuttle landed on Skaro she was exterminated by the Daleks. (BFD: The Davros Mission)