- Author Existence Failure: When Fujiko Fujio split up, both men retained the rights to the series. This made the rights very complex when Fujiko F. Fujio died. When Fujiko F. Fujio died, the series went out of print before all of the stories had been published. Some comics were never released until 2018.
- Divorced Installment: Chubby Cherub was originally a game based on the show. Few changes were made to the game aside from replacing Q-Taro with a cherub.
- Fan Nickname: The ramen man is often billed by fans as "the ramen guy" due to his affinity for ramen shown in other works.
- Follow the Leader: Fujiko Fujio gained success with this show, which inspired a boatload of imitators following the formula, many of them from the Fujiko duo themselves. The best-known and the longest-running of that is Doraemon, which itself inspired imitators.
- Keep Circulating the Tapes:
- The comic was out of print for a while due to rights issues.
- Some episodes from the 60's and 70's are hard to come by nowadays.
- As of December 2018, not a single clip of the English dub has surfaced online. If you have any tapes of it, don't get rid of them!
- Long-Runners: Began in 1964 and continued until 1974.
- Referenced by...:
- The ghosts in Pac-Man feature minor references to Q-Taro's design.
- It was parodied in Kyoufu no Kyochan.
- JoJo's Bizarre Adventure: When the crew registers in the hotel run by Enya, Jotaro registers under the alias "Qtaro Kujo".
- Osomatsu-kun: The 1966 version of "Chibita Walks the Tightrope" (episode 34) has Q-Taro show up amongst the circus audience.
- Shin Megami Tensei: Ghost Q is a reference to Q-Taro.
- The Keronians from Sgt. Frog seem to be well-acquainted with Earth culture. In an early chapter of the manga, Natsumi is surprised when Keroro takes offense to being compared to Q-Taro the Ghost (Slimer in the Tokyopop translation): "How dare you compare me to that overeating ectoplasmic idiot?!" Evidently, Pekopon (Earth) is an entertainment Mecca and produces most of the galaxy's highest rated TV shows.
- Thomas Blue has a fandub based off of the show.
- Mikeyspiky 200 reviews the game.
- Pat the NES Punk reviews the game.
- Ninja Hattori: The one glimpse that is shown of the movie Kenichi and Yumeko watch in the episode "Can You Rely on a Puppet Doll?" features a cameo from Q-Taro.
- Retroactive Recognition: In the original 1960s anime, the title character was voiced by Machiko Soga, who would eventually go on to play Bandora (AKA: Rita Repulsa).
- Unfinished Dub:
- Only the 70's series was dubbed into English.
- Only a couple comic chapters were translated into English.
- The Wiki Rule: Has one.
Trivia / Little Ghost Q-Taro