The Stolen Earth
Appearing in the linked episodes "The Stolen Earth" (2008) and "Journey's End" (2008), Vault Daleks watch over Davros in the Vault of "The Crucible" space station, acting as both bodyguards and warders. Although unnamed during the episodes in which they appear, the term is used for the variant on the BBC's Doctor Who website. Character Options named its licensed scale toys of the variant "Crucible Daleks".