Zerkaa

Joshua Charlie Joseph Bradley, professionally known as Zerkaa, is an English internet personality, digital video creator, and live streamer. Born on September 4, 1992, he is widely recognized as a founding member of the British YouTube collective known as the Sidemen. Over his online career, he has built a prominent digital presence across multiple video platforms, focusing primarily on gaming content, commentary, and lifestyle entertainment.

Bradley was raised in Bermondsey, London. During his youth, he took street dance lessons, competed in performances, and developed an early interest in house design and architecture. Following his parents' divorce, he turned to video games such as Call of Duty as a way to manage stress, and he later discussed dealing with anxiety in the documentary The Sidemen Story. He completed his secondary education at Bexley Grammar School in Welling, where he met future collaborator Tobi Brown. Bradley later attended Ravensbourne University, graduating with an upper second-class honours degree in digital film production. Before committing to content creation, he briefly worked alongside his father at a London bank and completed a week-long stint at the Sky Sports studio.

In 2009, Bradley launched his main YouTube channel, Zerkaa, focusing on gameplay footage from titles like FIFA and Call of Duty. As his audience expanded, he established six additional channels: ZerkaaPlays, ZerkaaReacts, ZerkaaLive, ZerkaaActuallyPlays, ZerkaaGuesses, and ZerkaaCards. Alongside YouTube, Bradley began streaming on Twitch in 2010, eventually becoming a partner. By 2022, he was the most-watched Twitch streamer in the United Kingdom, accumulating 17.68 million hours of watch time. His streaming work led to a nomination for Best Role-play Streamer at the 2022 Streamer Awards, and his walkthroughs of Hogwarts Legacy were cited by Guinness World Records in 2023.

In October 2013, Bradley co-founded the Sidemen, becoming the oldest member of the seven-person group. Between 2014 and 2018, he shared a residence with fellow members KSI, Miniminter, and Vikkstar while producing collaborative videos, later moving into an apartment with his partner. The group's content features challenges, sketches, and gaming commentary. In 2018, Bradley appeared in the YouTube Premium series The Sidemen Show, and in 2019, The Sunday Times named him the ninth most influential online creator in the United Kingdom. The publication also highlighted his EA-sponsored FIFA content in a 2021 article.

Bradley has pursued several commercial ventures independently and with his group. In 2017, he created his streetwear brand ZRK London, offering items like T-shirts, hoodies, and caps, which was rebranded as Internet Made in 2023. With the Sidemen, he helped launch Sidemen Clothing in 2014, the restaurant chain Sides in November 2021, XIX Vodka in October 2022, and the breakfast brand Best Cereal in March 2024. In May 2025, the group formed the venture capital firm Upside VC, where Bradley served as a director before formally stepping down.

Bradley has been in a relationship with Freya Nightingale since 2010. The couple became engaged in January 2024 and married in France in September 2025. In June 2026, Bradley announced via Instagram that they were expecting their first child. He is also a dedicated supporter of Millwall F.C. and has held a season ticket since the age of six.