Bill Gray, known professionally as Billy Santoro, is an American gay pornographic actor. He first began performing in gay pornographic films in 2013 as an exclusive model for Men.com, and appeared in Lucas Entertainment's first-ever bareback film alongside his then-boyfriend Seth Santoro later that year. He became a popular performer in the mid-2010s and appeared in over 200 gay pornographic films by 2017. He later became known for his controversies, including his tweets advocating for the shooting of Black people during the George Floyd protests in 2020.

Santoro began performing in pornographic films at age 38 and initially intended to only perform for one year. In June 2013, he signed an exclusive contract with Men.com for six months, for whom he made his debut appearance in Boy Ranch Part 1 in July 2013.^[3][2][4] In September 2013, he starred in the first bareback film for gay pornographic film studio Lucas Entertainment, which had previously exclusively made films with condoms and had spoken out against bareback films, with his then-boyfriend Seth Treston.^[5] He won the Grabby Award for Best Performer - Web in May 2014.^[6] By that year, he had performed in films for the pornographic studios MenAtPlay, Hot House, and ChaosMen.^[7] He released a 2015 calendar featuring photos of him, titled Hot Outside, in November 2014.^[8] By 2015, Santoro had performed in around 40 gay pornographic videos, including several for Kink.com.^[1] By April 2016, he began working on Leaked and Loaded, his website for homemade pornographic films.^[9] In 2017, he had appeared in over 200 pornographic scenes.^[10] He became a board member for the Adult Performance Artists Guild in April 2018 but resigned later that month, claiming that the organization did not protect pornographic film actors, specifically those who were HIV-positive.^[11]

Santoro has stated that, prior to performing in pornographic films, he received a degree in business from the University of Pittsburgh.^[12] He was a one-time resident of Washington, D.C., where he was a bartender and the general manager of the EFN Lounge and Motley Bar.^[13] One year before becoming a pornographic actor, Santoro started dating fellow gay pornographic actor Seth Santoro, who previously went by the name Seth Treston, and the two later got married in 2013.^[14][15] The two divorced in 2017 and Seth alleged later that year on social media that Billy had been physically abusive toward him.^[16][17] In 2014, Str8UpGayPorn called Santoro "one of today's most in-demand, mainstream gay porn stars".^[2] Garridan P. Faxton of Fleshbot called Santoro "the hardest-working man in skin-business" in 2015 for his consistent appearances in new pornographic films.^[18] AVN called him one of "the industry's hottest performers" in 2017.^[10]

PassTheTea.com described Santoro as "a bit of a controversial figure in porn" and "a polarizing figure" in 2016.^[19] Santoro tweeted in March 2019 that he would not film pornographic videos with "someone [he had] filmed with in the past" who had "gotten fat" and that he was "not a fan of looking at [their] fat body rolling around all over Twitter", which his Twitter followers criticized as fatphobic.^[20] He called detractors of the tweet "snowflakes".^[21] Until 2020, Santoro and his husband Gage Santoro filmed pornographic videos for their OnlyFans accounts at their apartment on Oxford Street in Sydney, Australia during the COVID-19 pandemic, where the police were called on them by neighbors at least three times for failing to social distance.^[22] The strata committee of their building unanimously voted to evict them in December 2020 for breaking a noise regulation by-law.^[23]