Victor Rivas was scheduled to be a character in Grand Theft Auto IV.
Unused text(?) reveals that Victor Rivas was another cousin of Tom Rivas. His relation with Lyle is unknown, but he is most likely his brother. According to the text, Victor was a electronics thief and Tom never liked him because of his "small junk" and his poor lifestyle of robbing. The text also says that he was living in Los Santos.