Angela's brother

Angela's brother is a character mentioned in Silent Hill 2 as the brother of Angela Orosco. He is implied to have been killed by Angela for his role in her abuse.

Biography
Not much is known about him except that he sexually abused Angela, having been influenced by their father, Thomas Orosco. Given Thomas's history of alcoholism and domestic violence, it's possible that Angela's brother also suffered some form of their father's abuse. At some point, Angela killed her brother just as she had their father.

Silent Hill 2
When James Sunderland first meets Angela in the graveyard on his way to Silent Hill, she tells him that she's looking for her mother, and that she thought her father and brother would be there as well. However, she had murdered her father and brother prior to the events of the game.

Before meeting Angela again, James sees a photo left in Room 109 of Blue Creek Apartments that shows a mother, daughter, father, and son, in that order. The photo is torn in half between the mother/daughter and father/brother, with the brother's face obscured. This could have been done by Angela, showing that the abuse began when she was young and that the men in her family were the primary abusers. It's possible that the pictured boy is Angela's brother. In the creased photo, the brother is wearing what appears to be a red long-sleeved shirt and overalls. He also appears to share the father's short brown hair, though his eye color is not made clear.

In Lakeview Hotel's burning staircase, there are two bodies on the walls that are held down by sheets resembling human skin and stained in their genital areas with dried blood, with obvious castration wounds. These represent Angela's father and brother, affirmed in the novelization in which James describes them as a "middle-aged man" and "younger man", and confirmed by Masahiro Ito.

Trivia

 * Despite having been killed by Angela, there is no memo mentioning her brother's disappearance or death, as there was for Thomas Orosco.