Well, things got hairy.
no, Miyazaki did
Captain Dolphin is clearly a pastiche of Lupin III and Cobra
Oh yeah, there was the fact that Lupin in the first half of the manga was an ultra asshole... never read it myself but watched a few videos talking about the difference in portrayal and how much Miyazaki influenced his change.
Was kinda surprised when I discovered that, but I remember that in Castle of Clagiostro, when Lupin is remembering his younger days, the scene of him in a casino surrounded by women matched the description of his original self.
It was interesting to see how tastefully Miyazaki changed him... especially when I read that he was practically a psycho with how he treated his closest friends, that really surprised me.