Waiter in The Leaky Cauldron

You could have seen him in Prisoner of Azkaban.

He works in The Leaky Cauldron as a waiter.

He´s kinda cool, using magic without using wand in hand (which seems to be absolutely normal in the Leaky Cauldron)

There is no clue about who he is in Muggles world, but certainly he is someone...:)