I have some thoughts that Kamski and Reed might actually be brothers and here's how:
1. They are almost a year apart and Reed is younger.
2. Gavin took his mother's last name when he realized that his brother was becoming incredibly popular (and he also really wanted teenage independence (he was 16 at the time of his last name change))
3. Gavin understands a little about mechanics because he spent his youth tinkering with his brother on early android prototypes. And partly because of this, he dislikes androids - they were already annoying him back then.
4. Reed also gets mad at the androids because they are a direct reminder of his imperfections in front of his brother.
5. The boys grew up in an ordinary family and, as a result, calmly went their separate ways. Their parents had no expectations—they only wanted happiness for their children.
6. P. S. Yes, the brothers' mother is a very strict, but loving woman. And she really wants grandchildren, haha.