These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Animation Age Ghetto: On Amazon.com, if you do a search under the genre "Anime" and go under the subcategory "Kids & Family", you'll find Lupin III DVDs.
Awesome Ego: Lupin the 3rd is adored by the fanbase, and the biggest ego in the cast. He's proud of his success, and has relied on his notoriety since his introduction.
Big Lipped Alligator Moment: The opening motorcycle chase sequence from The Legend of the Gold of Babylon gets a big "WTF" from a lot of first-time viewers. Let me revise that: Pretty much all of Legend of the Gold of Babylon gets a big "WTF" from a lot of first-time viewers.
Bizarro Episode: The second series was especially prone to these. Having to release a new episode every week for three years meant they couldn't all be winners. Such as the one where Lupin wants to steal a cat who eats nothing but pencil shavings. Or the one where he decides to go to the moon using a popcorn-powered rocket. Or the one where he steals a diaper so an old lady can write a newspaper article. No, these are not the results of some random generator somewhere.
Die for Our Ship: The franchise fandom is small enough — and the Estrogen Brigade portion of it especially so — that people don't actively flame one another, for the most part. The Lupin/Jigen, Jigen/Goemon, Lupin/Goemon and Lupin/Zenigata shippers can often hold quite civil and mature conversations with one another. What they will not tolerate is Lupin/Fujiko. Or Anyone/Fujiko, for that matter. Granted, she's devious as a cat and twice as manipulative, but you'd be hard pressed to find any named character on the show who isn't. The Lupin fangirls hate her because she's "mean" to their cute little thief (who harasses every attractive woman he meets, including her); the Goemon fangirls don't care for her 'cause she seduced then dumped their man in the first season (the only really justified complaint on this list); the Jigen fangirls agree with their adorably scruffy gunman, that she's "trouble" (again, take a look at theothers' track records); and the Zenigata fangirls (yep, they exist) just think she's a vapid bimbo (who is capable of building an explosive device powerful enough to destroy a solid oak doorbut small enough to fit inside a high heel. This isn't even taking into account the number of times she's saved her male compatriots' necks by charming her way into serving as The Mole when needed. Or the number of times she's freaked out at the thought of Lupin being in peril).
Escapist Character: Lupin, to a degree. Monkey Punch has stated in an interview with Anime News Network that "what [he] really likes about Lupin is his freedom, his boundless freedom that allows him to do whatever he wants whenever he wants and never really be tied down to anything or anyone in particular."
Estrogen Brigade / Periphery Demographic: Despite the series clearly being a seinen, the sometimes unintentional Ho Yay moments between the lead males in the anime entries manage to attract a growing female fanbase.
Fanon Discontinuity: Both the producers and some of the fans would like to ignore the pink-jacket era (consisting of the third anime series and Legend of the Gold of Babylon) altogether.
Germans Love David Hasselhoff: It's quite popular in Italy. In fact, it's so beloved in Italy that the Italians have forgotten he's French/Japanese. He's got localized comics, a live-action film, clothes with him and his gang on are considered "cool" to wear, and smoking a cigarette downward is called "Jigen-style". Italy was also the only country outside of Japan to get a localization and dub of the 1971 TV series (the "Lupin III (Green Jacket)" series). You can find some Facebook pages made as a tribute to the series. Even the main characters have pages mostly or solely dedicated to them.
Les Yay: It isa seinen, after all. A fairly light amount but it is there such as in the Columbus Files where Fujiko woke up in a bed belonging to a young woman by the name of Rosaria. After Rosaria explained to Fujiko about that Rosaria brought her here after she found Fujiko's unconscious body nearby but jokingly reassured her that "she didn't do anything to her". The episodes where they contain cults of scantly clad curvy women can occasionally give that vibe as well. Especially when one of them try to seduce Fujiko... only to punch her in the stomach very hard when she refuse and point a gun at her.
The Cliff Hanger laserdisc game, made using footage from The Castle of Cagliostro and Mystery of Mamo.
The Carl Macek dub of Castle of Cagliostro contains one of Macek's most infamously cheesy "translations": when Goemon slices off Lupin's burning clothing, "Once again I've cut a worthless object" becomes
Goemon: Should've worn an asbestos suit.
This complaint has also been leveled at Funimation's dubs of the TV specials due to the consistently incorrect pronunciations of certain characters' names.
Lupin's trademark jacket comes in three different colors – Green, Red, and Pink. Fans actually refer to series and movies by which color jacket he's wearing.note Technically four, if you count the White Jacket seen in the 1974 live-action movie (which most fans don't).
The red jacket in particular is the most recognized and typically the most referenced, often serving as a sort of shorthand Shout-Out to the franchise itself... if it's not a shout-out to a certain Lupin-obsessed director.
Having been in the hands of so many directors and writers throughout its forty-plus year history, any real continuity between the films, TV episodes, and TV specials is pretty much nil, other than the most basic aspects of the characters and plot.
Even the original manga has this issue; Monkey Punch was known to set up stories in one chapter, only to abandon them completely by the next one, with not even a reference in the new story to what had happened before. Hell, his original plan was to have "Fujiko Mine"note (loose translation: "Twin Peaks") be the name of every woman in the series. This resulted in Fujiko having no fewer than four origin stories within the first few volumes. Monkey Punch eventually got just as confused as everyone else and decided to just make Fujiko a single character, albeit still one with a Multiple Choice Past.
Nightmare Fuel: In "Goodbye Lady Liberty", the scene where Fujiko is forced into a possession ritual by the Three Masons sect might make your skin crawl.
They Changed It, Now It Sucks: In Japan, the franchise was hit hard by this when TMS replaced the principal voice cast for the Fuma Conspiracy OVA. They admitted they did it purely for budgetary reasons – they didn't have a lot of cash, the original voice actors were incredibly expensive, and they preferred to spend that cash on the actual animation. The end result was some of the best animation ever to come out of the Lupin franchise (probably second only to Cagliostro), but fans were extremely upset about the voice changes and stayed away in droves in protest. TMS was so chastised by the catastrophic failure of the experiment that they still have not attempted a wholesale cast change since.note Fuma aside, the only major cast change between 1977 and 2011 was in 1995 when Yasuo Yamada was replaced by Kan'ichi Kurita following Yamada's death... and Kurita had been personally handpicked and trained by Yamada for just such a possibility.
A similar reaction was Averted during the major cast shakeup in 2011, which saw Fujiko's, Goemon's, and Zenigata's actors retired and replaced with much younger sound-alikes. This lack of outrage is probably due to the fact that by that point, all of the remaining original cast were in their seventies (Goro Naya was in his 80's), and they increasingly sounded like it. Indeed, in the "Fujiko Mine" TV series that premiered the next Spring, Kiyoshi Kobayashi (the only original cast member not to be retired) sounds noticeably older than everyone else.
What an Idiot: Lupin meets with Fujiko after a betrayal coming out of her and what does he do about it? Continue to blindly trust her, instead of just simply dump her. This is gonna happen every single time.