Vault Dalek

The Vault Daleks or Crucible Daleks were Daleks charged with guarding Davros in the vault of the Crucible.

Profile
Each Vault Dalek was created from a single cell of Davros' body and kept within the vault to watch him by order of the Supreme Dalek.

They were fitted with a special type of manipulator arm, with a claw possessing eight pincers which could operate machinery. The Vault Daleks were destroyed when the Crucible exploded. (DW: The Stolen Earth/Journey's End)

Behind the scenes

 * Vault Daleks were not named during The Stolen Earth/Journey's End, but are referred to as such on the official BBC website.
 * They have also become known as 'Crucible Daleks', primarily due to the toy manufacturer Character Options naming the variant in this manner as part of its range of Doctor Who 5 inch action figures.