<Li> Alura Zor - El ( portrayed by Laura Benanti in season one and two , Erica Durance in season three ) -- Kara 's biological mother who is the twin sister of Astra In - Ze . Alura 's guidance ( both in flashbacks , and as a Kryptonian Artificial Intelligence which acts as Kara 's holographic virtual `` mother '' , whose advice Kara can access in the present day ) proves invaluable in Kara 's journey . Due to a fail - safe that Zor - El built around Argo City to protect it from Krypton 's explosion , Alura is still alive and is part of Argo City 's High Council . </Li>
<Li> Alura Zor - El ( portrayed by Laura Benanti in season one and two , Erica Durance in season three ) -- Kara 's biological mother who is the twin sister of Astra In - Ze . Alura 's guidance ( both in flashbacks , and as a Kryptonian Artificial Intelligence which acts as Kara 's holographic virtual `` mother '' , whose advice Kara can access in the present day ) proves invaluable in Kara 's journey . Due to a fail - safe that Zor - El built around Argo City to protect it from Krypton 's explosion , Alura is still alive and is part of Argo City 's High Council . </Li>
who plays supergirl 's mom on the tv series
who plays supergirl 's mom on the tv series
Laura Benanti
Laura Benanti