This is Captain America's only animated series. There was to have been one in the late 1990s set in World War II, but it was abandoned.
Jerry Siegel, one of the creators of Superman, wrote the dialogue and adventures of the cartoon Captain.
The lyrics to the theme song are: "When Captain America throws his mighty shield
All those who chose to appose his shield must yield
If he's lead to a fight and a duel is due
Then the red and the white and the blue will shine through
When Captain America throws his mighty shield!".
Along with the other four superheroes featured in Grantray Lawrence's Marvel Superheroes series, all the music featured dramatically throughout the episodes were effectively recycled from Trevor Duncan's stock library that had most notably used tracks as the main theme and incidental music in Quatermass and the Pit (1958). The only music specially composed for the series were the main title theme for each individual hero and the (now rarely seen) Marvel Super Heroes main title intro song and the Merry Marvel Marching Society song which played over the end credits.
The origin of the Red Skull is taken verbatim from the comic except that his Mentor is a clean shaven man with white hair who is referred to as "our leader." No name is ever given for him onscreen. The Red Skull's Mentor was Adolf Hitler in the original comic.