"Mark Edward Fischbach (born June 28, 1989), known by his YouTube username Markiplier, is an American Youtuber and Internet personality. Originally from O'ahu, Hawaii, Fischbach began his career in Cincinnati, Ohio. He is currently based in Los Angeles, California. As of April 2016, his channel has over 12 million subscribers, over 4 billion total video views, and is the 25th most subscribed channel on YouTube. Fischbach specializes in Let's Play gameplay commentary videos and indie games, commonly of survival horror and action video games."

"Daniel James "Dan" Howell (born 11 June 1991) is a British video blogger and radio personality. He is best known for his YouTube channel danisnotonfire, which has reached over 5 million subscribers. Together with frequent collaborator Phil Lester, Howell presented Sunday night entertainment show Dan and Phil on BBC Radio 1 from January 2013 until August 2014, and since September 2014 has been a monthly host on the station's Internet Takeover slot."

"Little Mix are a British girl group formed in 2011, consisting of members Jade Thirlwall, Perrie Edwards, Leigh-Anne Pinnock, and Jesy Nelson. They were formed exclusively for the eighth series of The X Factor in 2011 and became the first, and so far, only group to win the competition. The album's lead single "Black Magic" became the group's third number one single in the UK and was also nominated for two Brit Awards in 2016."