Since the age of 12, Sykes has suffered from a form of
night terrors known as
sleep paralysis, which is the inability to move or speak while falling asleep, or upon waking. Sykes became a vegetarian in 2003 at age 16 after watching a documentary about
animal cruelty online: "When I saw how animals are tortured on
factory farms, I couldn't justify being a part of that cruelty." He went on to become one of the faces for
PETA, eventually designing charity T-shirts with the slogan "Meat Sucks" via his Drop Dead Clothing line. He turned vegetarian at age 16 before turning vegan 15 years later. His passion for veganism can be seen in his venture 'Church', an arcade bar with a fully vegan menu, opened in 2018 and based in Sheffield's Kelham Island. Sykes is an outspoken
atheist, stating "I don't believe in God. I was asked to believe in him when I was in a shitty place. I couldn't understand why I needed a god or, in my opinion, something that doesn't exist." In an interview with
Radio.com in 2013, he also stated "In my opinion, I don't think believing in God is a
victimless crime. It's not that I'm right and everyone else is wrong. If it was just people believing in God had no effect on the world, then it wouldn't matter. Then you can believe in what you want, if you want an imaginary friend that lives in the clouds that's fine. But it's the fact that it does have an effect on other people and other things and the whole world is in turmoil mainly because of religion, at least a massive part of it." After receiving the Album of the Year award at the first
Alternative Press Music Awards in 2014, Sykes revealed a history of addiction and abuse of the drug
ketamine. Addressing the crowd, he said "My band wanted to kill me, my parents wanted to kill me, my fucking brother wanted to kill me," and also admitted, "I went to rehab for a month, and you guys were sending me texts and e-mails. When I got out of that rehab, I didn't want to scream anymore, I wanted to sing from the fucking rooftops." In 2007, a female fan accused Sykes of urinating on her and accused him and his bandmates of assaulting her. He was put on trial and pleaded not guilty. The fan took a photo of her face, which appeared to be covered in blood. An employee of venue Rock City in Nottingham, England said: "After the gig, two girls tried to get on the tour bus. Later on, the singer, Oliver Sykes, tried it on with one of the girls. When she said no, he called her a
dyke and first pissed on her before him and the rest of the band threw her and her friend off the bus. Once off the bus, someone within the band threw an empty bottle of
Jagermeister at the girl's head". Sykes strongly denied the allegations. According to record label Visible Noise Records, "numerous versions of the alleged incident have been posted online". Charges against Sykes were dropped due to a lack of evidence. On 12 July 2015 in Tuscany, Italy, Sykes married model and tattoo artist Hannah Pixie Snowdon. In 2016, Sykes announced that he and Snowdon had separated. In May 2019, Sykes alleged that their relationship ended due to Snowdon's
infidelity, and referred to her as his "ex-wife". Snowdon, despite admitting to having been unfaithful, alleges that Sykes was also unfaithful as well as abusive in a 2016 Instagram post. On 22 July 2017, Sykes married Brazilian model
Alissa Salls. In March 2021, Sykes shared a photo on
Instagram confirming he stayed in Brazil with his wife for the entirety of the
COVID-19 pandemic to that point, that he had acquired a
CPF number, and had bought a house in the city of
Taubaté, countryside of the state of
São Paulo, where he was living with her. In March 2023, Sykes got his Brazilian
National Migration Registry card as a permanent resident of the country. In May 2025, Sykes and Salls revealed through their personal Instagram accounts, that she was expecting twins, a girl and a boy, alongside a gender reveal video. On 18 July 2025, Salls announced that she had given birth to their son and daughter. ==Discography==