Bert on the rooftops.
Bert is a jack-of-all-trades. He is an old friend of Mary Poppins and is featured in the opening scene of the Mary Poppins Disney film, along with other various scenes. He is also the narrator, introducing the audience (breaking the fourth wall) to the Banks' neighborhood.
Bert is played by Dick Van Dyke. He has a large number of odd jobs, including a screever, one-man-band, chimney sweep, matchstick seller, and kite seller.