(SFM 15.ai) What's behind Pyro's Helmet?

What's Pyro actual identity? My Discord Server:   / discord   "Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favour of fair use." Scout and Pyro belong to Valve.