My dad has bipolar and schizophrenia. He abused me mercilessly when I was a kid. Now he yells at people over the internet, on discussion forums, all day long. He's medicated now. He is fascinated by World War 2, his father was a POW in the Japanese-occupied Philippines, so he collects old war movies and such.
In fact, some people blamed the fact that my grandfather had a kid so fast after coming back from the war on my dad's problems. When the POWs got back to San Francisco, the city was thrown open to them. The young debutantes of the city were ordered to entertain them, which included sex. My dad was likely not the only baby that resulted. My grandfather was from Arkansas, and so did what a guy did in those days if he got a girl pregnant, and married her.
My dad's sister was born a couple years later and is NT. My dad had a little brother, born when dad was 12, and bro was likely aspie. He never showed an interest in women until he fell madly in love with a woman who had a terminal degenerative disorder. He took care of her until she died, and then he killed himself to get from out under the debt. My mom's dad was likely aspie, and her mom bipolar. She is NT. I vowed to never have kids.