Alex Day (also sometimes known as Nerimon) is a British YouTuber and Nerdfighter, who was previously Charlie McDonnell's flatmate. He came up with the term Trock (Time lord rock) for his band Chameleon Circuit. He has two studio released albums, Parrot Stories and Epigrams & Interludes.

Alex was previously partnered with DFTBA Records to sell merchandise. In March 2014, allegations of sexual misconduct were made against a variety of Youtube celebrities. Multiple claims of sexual impropriety were made against Alex, at which point he confirmed the allegations and had himself removed from the DFTBA Records store.