In the mirror universe, Gerda Idun Asmund was a Terran female who lived during the 24th century. She crossed over into the primary universe in 2333. Gerda Idun was born around 2305, one of a pair of twins. Both girls were to be named after their maternal aunts. Unfortunately, one twin died, due to unforeseen complications. The mother, not wishing to offend either of her sisters by naming a dead child after them, named the stillborn infant Helga, and the surviving twin Gerda Idun. The Asmund parents died around 2330, within months of each other, from Belliard's bipolar disease.