Selenis Zea is the main protagonist of the comic.
She is a clone, or rather one of a long line of clones.
The original Selenis was a scientist who set up a secret cloning facility on an uninhabited planet.
But the cloning-tech is not perfect...
She can be hired as an Bounty-Hunter / Assassin.
Early in the story she is hired by Solvan Mar to catch/kill Vero Plank, but it ended with her death at a Perriman cloning facility, where she gave her final words of him using the technology for his survival.
Her 33rd clone activated in her remote headquarters, where the subsequent stories focus on her since then.
Not much is known about Selenis Zea except as a middle-aged scientist who was experimenting on cloning techniques, which she was ruthless in her goals that she ordered the termination of the first clone despite having displayed human personality. Many decades, even centuries, have passed with her clones lengthening her lifespan even to the point where her youthful appearance baffled many of those who knew her decades ago. During the course of her long life, Selenis also saved Margrave's life fifty years ago. Her occupation mainly involved assassination, capturing targets, or locating Perriman's technology.
More extent to her origin had been exposed when she visited the Burne Unit, where the owner had been testing on sensory manipulation. During her test, she--or rather her progenitor--was shown to have a seeminly decent childhood with both parents before her adult life as a scientist working on a laboratory attacked by an unknown force. As the sole survivor of the attack, she salvaged from the ruins to build her own cloning laboratory where she laid a foundation for her long line of clones. Due to the program's malfunctions from consciousnesses of Selenis' deceased clones proceeding to attack the owner at Selenis' mental command, many aspects of the past life has and its date been left unknown.
By Episode 33, Selenis met Luna--who was cloned as a child form as a way to create a stable variation compared to adult. As Selenis comforted Luna after she was distressed upon her revelation, much hint had been made that Selenis herself might have shared similiar origins as Luna.