Superhero Updates?

Inspired by a thread on the history and pedigree of sidekicks over on Howling Curmudgeons, I started thinking about "What if Big Two comic creators got their hands on classic pre-superhero characters and revamped them for the superhero age?" Sherlock Holmes has been revamped to death, of course, as have the more famous pulp-era heroes like the Phantom, Shadow, Tarzan, Doc Savage, etc. But some of the ones you wouldn't think appropriate to superherodom might still work:

( Ideas behind cut )

So, anyone else have ideas?

Superhero updates Round 2

Again, take classic characters and revamp them for a superhero (not just action) series!

( More weirdness behind the cut )

Now, add some more!