During an emergency temporal shift, Jast and the rest of the Cult of Skaro where transported back to Manhattan during the 30's. There, Jast and the others planned on using Dalekanium on a lightning rod to power an army of "Dalek Humans".
Later, the army of "Dalek Humans" turned on the Daleks. Thay and Jast were both murdered before Caan could shut them off.
Doctor Who: The Tenth Doctor(David Tennant). Episodes include...
Identifing Jast Edit
If you watch Doomsday, three of the daleks look alike. Jast can be noticed by his high voice.
Dalek Jast appears in only two episodes of the Tenth Doctor...
Identifying Jast Edit
Jast speaks in a high voice.
Appearances: Army of Ghosts Doomsday Daleks in Manhattan Evolution of the Daleks