Alpha (The Evil of the Daleks)
From Tardis Wiki, the free Doctor Who reference
Alpha was one of three altered Daleks given the Human Factor as an experiment by the Dalek Emperor, the others being Beta and Omega. (DW: The Evil of the Daleks) Alpha survived the Dalek Civil War on Skaro and lead a group of humanised Daleks to the planet Kyrol. Here they survived and bred. However they were manipulated by Kata Phobus a telepathic parasite. They destroyed themselves to prevent it from feeding from them. (DWM: Children of the Revolution)
