Lira'Tol nar Cepan Vas Yahala is a true Asari/Quarian hybrid, genetically engineered and created within a laboratory on one of the many vessels comprising the migrant fleet. A team of top scientists in various fields were hired(as well as forced) to do the work by a man named Saelo'Jel nar Zaaron Vas Xaelaya. Saelo is a ruthless man, leading a crime syndicate or 'enterprise' as prefers to call it.
Not wanting his enterprise to die with him, he desired an heir, but he knew that not just any Quarian would be followed by his people, especially as young and inexperienced as they might be by the time he was no longer able to lead them himself. So he wanted a genetically engineered son with biotic ability, something very rare in the migrant fleet.
But in order to be truly powerful, this child would need to have Asari DNA, which would allow her to access her abilities far more easily. And mixing the DNA of a Quarian and Asari was a seemingly impossible thing. If an Asari mated with a Quarian, a simple Asari would be born and not a true hybrid. But research had been done on this sort of thing and so he gathered all the scientists necessary. However, there was a catch. Due to technical complications, any child born a true Asari/Quarian hybrid would have to be female.
Accepting this, after some time, Lira was born. With blue skin and an Asari-like head, she still required an environmental suit just like all Quarians and had their appendages as well.
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