The sort of man that would come into your life, principly, to rape your babies. He may be a 'relative', or a 'complete stranger'. Will either befriend you or find ways of getting close enough to you to get at your children.
This may sound strange, but, he may even find a criminal way of impregnating you while you sleep and steal the undeveloped fetus for sex with the baby.
For many years, they drugged and raped me and stole my babies as I slept, and then raped the babies. He must be a nonce.