You know, you might have something here. Tezuka was a big film buff and often put references to other movies in his work. What comes to mind are two stories in Rainbow Parakeet, one where Inco stays at the inn from "Psycho" (Hitchcock) and another where he disguises himself as professor "YoungFrankenstein" from the University of "Mel Brook."
Another one that comes to mind is Phoenix: Life, where Kunihiko Aoi has a statue in his office that shoots milk out of it's breasts, an obvious reference to "A Clockwork Orange."
It's a long shot, but it's fun to think the movie and manga have some similarities. That necklace though, that's uncanny.
Rock was already a character before the movie came out, but Vampires was the first work to use him as an adult (I think...?), and thus his more dark persona emerged. It's very well possible that Tezuka used Tolen as inspiration.
I think what really reminds me of Rock is a segment from a review I read online: "Tolen (Ray Brooks) has it. Colin (Michael Crawford) doesn't. "It" is the knack for getting women into bed." (Rotten Tomatoes)
That's Rock alright.
I love "A Hard Days Night," but I had never heard of this one. Time to go rent it!
"There are demons in my soup. There are monsters in my damn soup."
- Rambling Billy Bob Joe