This Time Round: Teeth and Curls

Setting down his glass, the Doctor stood up and shrugged his Inverness cape back on.
"Must dash," he said to Alpha Centauri.
On his way out, the Doctor brushed a figure in a floppy coat with a mop of curly hair.
"Hallo!" he said, startled. "Sarah Jane mentioned you: 'teeth and curls.'"
The figure said nothing, grinning widely.
"Yes," the Doctor sighed. "I was afraid so. Is this your companion?" He gestured to the man wearing a crumpled deerstalker.
"Whadda you-a mean?" he asked in an excruciating Italian accent. "I'm no his companion. I'm-a Chico. And this is Ha -- "