I love Joshua being a real kid as much as everyone else- but hear me out:
What if... Joshua is a tiny robot that Gordon built & programmed during his time at MIT?
Gordon refers to him as his son regardless. Especially when Benrey holds Joshua like a Playstation controller. Yes, he might look like the world’s cutest portable gaming console, but that doesn’t mean you should install Skyrim with mods on him, BENREY! >:/