Echo

Echo was one of two daughters of Edward Nygma and Emily Prinna. She was also the sister of Query. Echo was born shortly after Edward married Emily. Echo seemed to have a happy family life until she moved out of the house when she was 13 due to Emily's anger at Edward for murdering the people he claimed to have been investigating.

Echo, along with Emily and Query, were kidnapped by Floyd Lawton and taken to a maze. Edward, now known as The Riddler, murdered Emily in front of the children and ordered Deadshot to kill Echo and Query. Echo, along with Query, was shot and killed by Deadshot.