It's TONY, Y'All!

Former Britney bodyguard Tony, is the 'secret witness' who says he's got damning evidence about Britney for the custody case. Tony was fired by Britney around the time of concert at the House of Blues in Orlando. We spotted him with her at Millennium Dance Studio in April.

An X17 source tells us this guy never saw Britney do anything wrong or neglectful with her kids and that he wasn't even really allowed to be around Britney and the kids. Our source calls him "an angry guy" who "talked shit about everyone" and who was "lazy, a liar, and nosey."

More details coming ...