Or at least closely related to them. Because in the AvP 2 movie he has Scar's mask on his wall in his home. And I'd imagine only close relatives would be allowed to keep the bio-mask of a deceased family member. So it would only be logical if he's closely related to them, or at least to Scar, by blood.
What's your guys thoughts on this theory? Tell me in the comments below, I'd like to know what you think about it, or what your theory is to this subject.
(And yes, I know the producers only meant for it to be a small easter egg to the first AvP movie, but that doesn't mean we can't speculate and theorise about a greater meaning behind this easter egg.)