Mera

Mera is the wife of Aquaman, who currently resides in the city of Atlantis.

One day, the Joker came to Atlantis and pretended to be friendly so that Mera would let him in. When she did, the Joker wrapped her in chains and hung her upside down, and did the same to her husband when he returned. Aquaman berated Mera for forgetting that the Joker was an enemy of his while the Joker laughed and began to explain his evil plan. Fortunately, Mera and her husband were both saved by the arrival of John Stewart, who defeated the Joker and sent him to Supermax 282.