I confess, I haven't been following Mera in the
New 52. The Mera that I know, was the Queen of Dimension Aqua. But at some point the evil, Leron, takes control of her kingdom and she heads of to Earth. There, she meets that strapping fella, Aquaman, the Atlantean sea-king. They go on a bunch of journeys and down the road fall in love, get married, and even have a son (Arthur Curry, Jr.) together.
When all looks to being going well, tragedy strikes. Their Aquababy is kidnapped and poisoned by Black Manta. In order to save her child, Mera, heads off on a crusade, that takes her back to her home world looking for a device that will cure her son. Sadly, by the time she gets back her son has died. This is the powder keg to her crazy. She goes through a nervous breakdown, which causes her toss some blame at Aquaman for having inferior DNA, then the marriage to crumbles, and finally she is accidentally impaled by Aquaman when she viciously attacks him.
Mera has appeared in live-action format. She was played by Elena Satine in an episode of CW's
Smallville. In that incarnation she was Aquaman's wife.
DC Comics - Mera (New 52)
Cosplayer: Oki-Cospi * Photographer: SoulCrash Ron