Nexus - The Alien Cyborg

Known as a galactic nomad, Nexus was the finest bounty hunter roaming the cosmos. While collecting samples from a nearby asteroid, he was ambushed and captured by the monkey military, the Federation. After having his memory wiped, he would soon be experimented on and merged with the sentient technology Genesys. In hopes to create a cybernetic super soldier that the Federation would use to impose fear across the galaxy. 

These experiments were unsuccessful though and Nexus was able to override the Genesys technology in his brain and escape the facility and is now on the run. He has been referred to by Director Nova as a myth with no evidence supporting his existence. Still there are those who report visits in their dreams. Like a living shadow, watching and observing them in a state of sleep paralysis before finally awaking them.