Into the Deep

In the future Humans have gained technology to where they can travel in a blink of an eye, they designed star gates and also found that they were not alone in the galaxies that they was billions of different life forms and planets to where humanoid Aliens are and also creatures that are more animalistic.
In the year 4021 humans and other races could choose how their children would look like, sex or even the DNA with special functions to make soldiers that was deadlier than a normal person no matter their race.
A genius was in charge of collecting DNA even from planets that was wiped out because of the galactic alliance that condemned different races and planets that doesn't bow down or align with what they want just like one planet out of thousands with a race that would remind you of stories of demons.
Their strength was better than even the clones or births that the alliance allows their higher ups to create, one of the strongest ones throughout the galaxies that layed down their lives for their royal family that the alliance got a hold of the twins making their people give up to just protect them.
The alliance did not keep their words killing the majority of the planets races even killing the twins to collect their D.N.A, their parents layed their lives down leaving a elder who collected the royal ones bodies and laying them to rest.
One woman who was made to marry a top general of the alliance who has the highest I.Q. was able to use the D.N.A from the twins for her own child which she snuck the twins DNA to use a long with hers and only 3% of the man she was forced to marry so she gave her his special eyes that was his families secret that gave them a certain power, when she only found 3% of the genome of that special trait she chose to only allow that from his blood line which happened to be another race the alliance wiped out just to take that property from them.