Of all the amazing characters who have been caught up in the sausage grinder that passes for a network of friends and associates of Donald John Trump, the transformation of one of them interests me greatly.

What has become of the man known as America’s Mayor?

Rudolph Giuliani has sidled up next to Trump as his personal lawyer and in the process has become the butt of jokes from damn near every late-night comedian in the country; he has morphed into a cartoon character depicting an out-of-control, unhinged fanatic.

Oh, my. It’s astonishing.

I remember how this man emerged as a champion of New York City in the aftermath of the 9/11 tragedy. He stood strong and resolute. He comforted his constituents who were shocked and stunned by the horror of that event. Time magazine named him its Person of the Year for 2001, a richly earned designation for the mayor.

However, over time he seemed to become full of himself. He ran unsuccessfully for president. He’s been divorced a couple of times.

Then along came Donald Trump and there was Rudy, backing the Republican candidate for president.

He reportedly argued on his own behalf for an appointment as attorney general.

Then he joined himself at the hip to Trump when the president got into trouble over the Ukraine matter.

All the while, he has made a spectacle of himself, spouting buffoonery whenever possible. He talks blithely about investigations into Trump foes’ matters. His TV behavior becomes grist for jokes.

I don’t get it. None of it makes sense.

All I am left to do is shake my head.