[2] They were born to an Indian Army officer, Col. Virendra Singh Malik from village Anwali Sonipat district of Haryana, and his wife Anjoo Thapa.

[4][5] On 13 April 2023, Nungshi Malik married Avinash Jacob Varghese in her home town Dehradun, Uttarakhand, India.

[8][9][10] The twins participated in 'Climbathon 2013' where they scaled a virgin peak at 21000 ft funded by Indian Mountaineering Foundation in August 2013.

[11] On 16 December 2014, after climbing Mount Vinson in Antarctica, they became world's first twins and siblings to scale the 'Seven Summits' together.

[16] In September 2019, Nungshi and Tashi led Indian 'Khukuri Warriors' in the World's Toughest Race: Eco-Challenge Fiji that pitched 66 teams of adventure athletes from 30 nations against forces of nature and against each other traversing 671 km of rugged Fijian landscape, ocean, rivers, lakes and jungles using dozen adventure activities.