A (Mr) Bradford is a two-face who will say different things to different people. A back-stabber who will trick you into thinking he's on your side until suddenly they're not. Also used when talking about a horrible leader. (Used as a nickname for a person who fits the description)
That lying, backstabbing Bradford! I should never have trusted them!
Or
There's a reason why we call him Mr Bradford and it's not because that's his actual name.
Or
He's the worst boss ever! He might as well be called Mr Bradford!