The Beatles themselves reportedly did not care for this series. They were also less than enthusiastic about the idea of Brodax and Dunning doing a feature film. However, they changed their minds about the feature film when they began seeing completed footage from Yellow Submarine (1968). (John Lennon admitted in the 1970s that he "got a blast" out of watching reruns of the old cartoons.)
The series became notorious for its static visual style with the Beatles being depicted in their mop top and suit look from A Hard Day's Night (1964), despite the fact the band had abandoned that look while the series was in production.
In the episode "Paperback Writer", Paul begins his version on how he met John, George, and Ringo with his knighthood for medical research, instead of for his success in popular music, for which Paul McCartney was knighted in real life.
As of 2019, the series has never received an official release on home video. It hasn't even been officially released digitally. Because of this, many bootleg copies have surfaced online: all of varying quality.
After the end of the series, Al Brodax and George Dunning would continue with Beatles animation by creating the animated feature Yellow Submarine (1968).