Here's how the character came to be:
* 1946: Larry Harmon, a young entrepreneur, bought the rights to the "Bozo" character from the "Bozo the Bear" comic strip.
* 1949: He started a Bozo show on local Washington, D.C. television, with Frank Smith as the first Bozo.
* 1950s: The show became a national sensation, with various actors taking on the Bozo role in different cities.
* 1960s: The Bozo character became a popular icon of children's entertainment, with merchandise, theme parks, and even a feature film.
So, it's not really about how "Bozo the clown" became a clown, but rather how the character was created and how various actors brought it to life on stage and screen.