The U.S. President who appeared as a character in the Broadway show "Annie" was Franklin D. Roosevelt. In the musical show, President Roosevelt aids Daddy Warbucks in the search for Annie's parents. Upon meeting Annie, Roosevelt is totally inspired to make a new deal and restore America's economy.

Regarding "Annie", it is based on Harold Gray’s popular comic strip 'Little Orphan Annie'. The comic strip premiered in the 1920s in the New York City, New York Daily News. It became one of the most widely read comic strips in the 30s and 40s.

The original 1977 Broadway production of "Annie" ran at the Alvin Theatre (now renamed the Neil Simon Theatre) for 2,377 performances and won seven Tony Awards®, including: Best Musical, Best Book of a Musical, Best Original Score, and Best Choreography.

When the production of "Annie" debuted, it starred Reid Shelton (Oliver Warbucks), Dorothy Loudon (Miss Hannigan), Sandy Faison (Grace Farrell), and Andrea McArdle (Annie). The role of President Franklin D. Roosevelt was played by Allan Ray Baker.

More Info: en.wikipedia.org