Monkey Punch's popular Lupin III manga started in 1967 and become quite a phenomenon ever since. Thus Goo Ranking made a poll to see which Lupin III trivia is unknown to most fans.
#1. Lupin and Zenigata went to the same university
Zenigata is 3 years older than Lupin. In the original manga, Lupin saw Zenigata and said, "The children of a thief and a detective got together at a same university."
#2. Lupin and Fujiko had a son named Lupin Kozou (Trans. Lupin Boy)
This was a plot that was brought to the orignal author, Monkey Punch, to run in Shonen Action, the manga magazine for boys in 1974 and not Monkey Punch's original idea. The spin-off manga "Lupin Kozou" ran in Shonen Action for 18 chapters.
#3. Goemon was using a smartphone in "Lupin The Third The Last Job"
#4. Zenigata makes 330,000 yen (approx. $3300USD) per month
#5. The dad from Tensai Bakabon appeared in the Lupin TV series once
#6. Lupin had long hair during the first planning stage
Monkey Punch drew Lupin wiith long hair at first but changed it to short hair to save work on drawing. According to Lupin the Punch website, the change also signifies the fact Lupin does not stay within cultural norms since every man had long hair at the time because of the Beatles.
#7. Jigen's favorite color of underware is purple
Jigen insisted on purple underwear in few episodes.
#8. Conan from Detective Conan made a cameo in the Lupin III OP
Conan's cameo was made before the Lupin III and Detective Conan crossover episode.
#9. There was a Lupin III musical
#10. Japan and France co-produced an anime featuring Lupin III's off spring, Lupin VIII.
The Lupin III anime didn't run in France due to copyright complications, thus this anime was created.
Source: Crunchyroll News
#1. Lupin and Zenigata went to the same university
Zenigata is 3 years older than Lupin. In the original manga, Lupin saw Zenigata and said, "The children of a thief and a detective got together at a same university."
#2. Lupin and Fujiko had a son named Lupin Kozou (Trans. Lupin Boy)
This was a plot that was brought to the orignal author, Monkey Punch, to run in Shonen Action, the manga magazine for boys in 1974 and not Monkey Punch's original idea. The spin-off manga "Lupin Kozou" ran in Shonen Action for 18 chapters.
#3. Goemon was using a smartphone in "Lupin The Third The Last Job"
#4. Zenigata makes 330,000 yen (approx. $3300USD) per month
#5. The dad from Tensai Bakabon appeared in the Lupin TV series once
#6. Lupin had long hair during the first planning stage
Monkey Punch drew Lupin wiith long hair at first but changed it to short hair to save work on drawing. According to Lupin the Punch website, the change also signifies the fact Lupin does not stay within cultural norms since every man had long hair at the time because of the Beatles.
#7. Jigen's favorite color of underware is purple
Jigen insisted on purple underwear in few episodes.
#8. Conan from Detective Conan made a cameo in the Lupin III OP
Conan's cameo was made before the Lupin III and Detective Conan crossover episode.
#9. There was a Lupin III musical
#10. Japan and France co-produced an anime featuring Lupin III's off spring, Lupin VIII.
The Lupin III anime didn't run in France due to copyright complications, thus this anime was created.
Source: Crunchyroll News