Tashek was the elder sister of Colonel Nasgard, a senior member of the Kaled Military Elite, and the aunt of Yarvell and Davros. She lived on Skaro towards the end of the Thousand Year War between the Kaleds and the Thals. She helped her sister-in-law Lady Calcula raise her children while she was away from home serving in the House of Congress. Her ancestors in the House of Nasgard had owned a home beside Drammankin Lake for several centuries.