34 years ago - Mera is born the princess of Xebel, an alternate dimension created thousands of years ago to imprison Atlantis's ancient enemies.
31 years ago - 3-year-old Mera begins training in her people's ancient magic.
12 years ago - Arthur Curry breeches the barrier into 22-year-old Mera's dimension in the Bermuda Triangle in an attempt to free the Idylis colonists, creating a weakness her people can exploit to escape.
11 years ago - The only Xebelite skilled enough to pass through the dimensional barrier imprisoning their people, 23-year-old Mera leaves her people behind on a mission to assassinate the King of Atlantis. She attacks Arthur Curry, but insead joins him when he allows her to walk away from their battle. She falls in love with him, and helps him take the throne.
9 years ago - 25-year-old Mera marries Arthur Curry, and becomes the Queen of Atlantis. She meets Tom Curry, Arthur's father.
8 years ago - 26-year-old Mera battles La Sirène la Bailene when she attacks Atlantis, and recognizes her magic as Xebelite.
7 years ago - 27-year-old Mera gives birth to Arthur Curry Jr., Arthur Curry's son. Orm Marius escapes Atlantis and begins amassing followers.
6 years ago - 28-year-old Mera is horribly injured when Orm Marius and Black Manta attack Atlantis. Her last memory is of Manta taking Arthur Curry Jr.
5 years ago - 29-year-old Mera recovers from her Coma, and attacks Atlantis & Arthur Curry in a blind rage at the loss of her child Arthur Curry Jr until she discovers that he is still alive. She goes into seclusion, quietly serving the people of Atlantis in penitence.
3 years ago - 31-year-old Mera becomes an instructor for the Atlantean Sorcerers where she mentors Kaldur'ahm and teaches him her watershaping technique. She stops La Sirène la Bailene from stealing a Xebelite artifact from Atlantis while Arthur Curry is on the Watchtower, heralding her return to the throne.
now - 34-year-old Mera finds evidence that her home dimension is preparing to invade. She & Arthur Curry cross the barrier into Xebel to try to stop them.
As the long-time love interest of one of the most constantly changing characters in DC, Mera has obviously undergone quite a few changes herself. Crafting a definitive story for her has depended largely on first nailing down exactly what we want Aquaman's story to be, but once that was done we were able to find some really wonderful stuff to build on. The core of her story comes from understanding that, while Mera is the love of Aquaman's life, she's also often also depicted as a truly tragic figure; a Guinevere to his King Arthur. At times, she's even almost an antagonist. Telling her story means finding the balance between her place at his side, and at his throat.
While her role as an agent of Xebel casts her as an insurrectionist and a master of a magical art unknown to the rest of Atlanteans, it's her rage when she awakens and believes her child murdered that has her at her most dangerous. This is meant to mirror the times when she would often be depicted as insane in the comic without weakening the character. Her subsequent penance is to withdraw and serve the city, and to teach her particular waterbending art to Kaldur'ahm, paving the way for the introduction of the new Aqualad.
Mera is finally getting her due in the current Aquaman comics, and we're excited to show that she was always that awesome.