Marvel's revival of Doctor Droom in the guise of "Doctor Druid" caught my fancy. Doctor Droom, an old Lee and Kirby character and precursor of sorts for Lee and Ditko's Doctor Strange, was a monster fighter in the pages of Amazing Adventures. He never rated a cover though until his adventures were dusted off and fitted with continuity implants making him safe for inclusion in the Marvel Universe. He even got admitted into The Avengers where he turned into a really vital and compelling old crank of a character.
But it was in these issues of Weird Wonder Tales in which Doctor Druid is truly showcased to the world. The two covers by Kirby are real winners, two of his best during his return tenure at the company. And the two by Ernie Chan and Dave Cockrum are not weak efforts either.
I have little idea what's become of Doctor Druid these days. Last I read he was dead, but as we all know that hardly precludes a character from becoming a vital part of the Marvel mythology yet again. Revivals in fact are the good Doctor's specialty.
Here's a link which features his first adventure written by Stan Lee drawn by Jack Kirby and inked by Steve Ditko. You'd have a hard time beating that.