Genesis Dalek

The Genesis Daleks were the original faction of Daleks who were created by Davros. (TV: Genesis of the Daleks)

Legacy
According to account, Davros's Daleks led by the Dalek Prime ultimately emerged from their entombment and forced the Thals to evacuate Skaro. By this account, it was this faction of Daleks which established the Dalek Empire. (PROSE: The History of the Daleks)

Behind the scenes
The Genesis Daleks were named in issue 39 of Doctor Who: Figurine Collection.