Unfortunately, it would be 26 years, following the release of "Injun Trouble", the coda to the Cool Cat series, before he'd show up in The Sylvester & Tweety Mysteries. By then, local actor Joe Alaskey took over the role.
Right now, though, here's the debut of Cool Cat. Dig it.
I can't help but think that if WB took a chance on doing a TV series with Cool Cat in the 70's, chances are they could've gotten Scatman Crothers to essay the part. I just can't get the idea out of my head that in the 70's, ol' CC would've sounded like Hong Kong Phooey.