Kazumi Adachi

Kazumi Adachi is the mother of Emiko Queen and the former lover of Robert Queen.

Having Emiko
At some point, Kazumi fell in love with the billionaire Robert Queen and they both had a child named Emiko. However, Robert ultimately chose Moira, Oliver, and Thea over Emiko and her mother. He abandoned them and cut off all contact with one another.

Death
At some point, Kazumi was murdered by an unknown perpetrator, in which her house in the Glades burnt down.

Legacy
Her daughter Emiko swore to avenge her mother by embracing the darkness and becoming the new Green Arrow after her half-brother Oliver was incarcerated.

Behind the scenes

 * In the DC Comics, Shado is Emiko's mother rather than Kazumi. Kazumi is still related to Emiko however, being Emiko's great grandmother, and the grandmother to Shado.