What kind of person is badchan? What does he sense about Hannah/Chaya?

The Badchan is a comedian or jester initially hired to entertain the attendees at Shmuel's and Fayge's wedding. He correctly predicts that the Nazi officer who escorts the villagers away is not to be trusted. He frequently speaks his mind even when doing so might place his life at risk. He perishes in the camp after being chosen for execution.The badchan approaches the girls and sings a kind of rhyme to entertain them. Upon learning Chaya's name, he tells her that her name means "life" before departing. He also calls her an "old girl in young girl disguise."