- We don't know for sure. He's older than Nika, and they're both in college, so probably about 19-20
- We don't know for sure. Seems to be 20-30 years.
I think you're trying to say "he's 20, and he went back 20 years, so he's his own father."
That doesn't matter. First, his OLDER sister will need to be born. THEN he can be created. Until we see Juli running around with a baby banging the MC, he can't be his.
We saw Juli and Heather talking about their old boyfriend, and they mentioned he wasn't around very long and disappeared one day. Certainly not around long enough for Helen to gestate, be born, then MC to be made.
We know he can't be his own father. See above.