Martian Manhunter...

Last of his race (except for Miss Martian, and I can't see them getting together).

What if J'onn fell in love with a human woman? What if, even knowing the truth about his true form, they married?

Would they be able to have kids?

What might a child of theirs look like in his or her natural form?

What of J'onn's abilities might the child inherit? All of them? Only some? If only some, which ones?