Who's This? A crazy talk show host.
How you could have heard of him: The Creeper had a stand-out appearance on the New Batman Adventures (voiced by Jeff Bennett) and of course appeared on The Brave and the Bold (voiced by Brian Bloom). He missed his chance at the big time, however - there was, at one time, a solo animation project in the pipeline for him, but it morphed into Freakazoid.
Example story: Beware the Creeper #2 (July-August 1968) "The Many Faces of Proteus!" by Dennis O'Neil (as Sergius O'Shaugnessy) and Steve Ditko
Gaining entry to Legs Larsen's estate is done with FISTS, and Ryder doesn't even turn into the Creeper to beat up a couple of goons. But once inside, stealth be damned, he changes into his madcap persona:
Final analysis: Beware the Creeper obviously stole elements from Spider-Man, and Ditko certainly likes to give the non-costumed persona a lot of action, but this issue was certainly dynamic and action-packed, Jack Ryder's supporting cast is well-defined, and the story was ultimately quite fun. The question remains: Would I rather have a Creeper persona with its own, loony personality? Or does it work better as a put-on? Jury's still out.
Who's Next? The evil Justice League.