First scientist (The Mutation of Time)

During the Time Destructor Incident on Kembel in 4000, the Black Dalek Leader was assisted by two scientist Daleks in addition to the chief scientist: the first scientist and the second scientist. Together, the two scientists tested the Time Destructor on Trantis, exterminating him after learning that the Taranium Core was a fake. (PROSE: The Mutation of Time)