I've been thinking about parents too ^^ For some of them; it's pretty interesting. For now I have a few of them
The ones with know detailed bios are Archer's parents (Friedrich and Seraphina) and Casanova's dad (Sebastian). I also have dads for my Pokemon ocs and my Aliester has three parents ( his mom and his two dads who are still nameless lol 1 . 2)
I also have Jacob who is a parent but not for other ocs, but he's been a parent figure for his little brother when they were younger ;o;
Oof lemme edit this: archer gets his good looks from his mom but his hairstyle and his determination/work ethic from his dad xD
The Pokemon ocs look pretty much like their dad's lol but August is following his dad's footsteps while Proton had gone a completely different course due to his circumstances
I dunno what casa's mom would look like but he would look similar to his dad anyway; before Casa changed up his hairstyle it was the same look as his dad's though Casa's eyes are more green.
Aliester looks like his birth dad so it's easy to tell who he comes from. He gets his open mindedness and sense of respect and some work ethic from his mom, though he does have his laid back, sometimes sarcastic attitude from his dad lol. His second dad gave him his common sense and morality, the usual good quirks xD