This cartoon features the only animated appearance of Nana Oyl, Olive Oyl's mother. She was a regular character in the Thimble Theatre comic strip but has been absent from every Popeye adaptation with the exception of this cartoon and Popeye (1980).
The cute little singing cat might have been a nod to two more famous cartoon felines, Beans and Felix.
Wimpy, hamburger in hand, serves as the circus ringmaster.
"The Daring Young Man On The Flying Trapeze" did have a name, contrary to popular belief: Jules Leotard. He was a former law student who ran away from home and joined a circus as an adolescent. Young Jules was the first performer to wear the skin-tight suit of clothes that would later be named after him; he died of tuberculosis aged only twenty-eight, and the man in the cartoon is obviously modeled on him. In the song, a young man is bemoaning the fact that Jules has just run off with his fiancée.
One of the few times that Popeye's rival does not resemble Bluto/Brutus.