This is part two to the story 'Diabolique'. This story became necessary when artist Erik Larsen lost nearly everything when his home was destroyed during a fire in Oakland. Part two of the 'Revenge of the Sinister Six' storyline was divided into two separate issues so that they could ship on time. 'Diabolique' filled the second half of each issue.
Spider-man was investigating a musuem exhibit that he'd found particularly strange while takind pictures as Peter Parker. His concern was validated when he found Diablo brought back to life in front of his eyes. The villian has returned to obtain the 'Diabolique cask' and ultimate power.
The confrontation between Diablo and Spider-Man feels very much like a fight with Mysterio. Diablo uses various illusions and tricks that are fueled by the science of alchemy rather than magic. Spidey uses applied science that he has been studying since he was a child to answer it. The struggle has plenty of special light and sound effects and ends in Diablo getting away. However, Spidey delayed the villian long enough to effect the weapon he was after. His plan ruined, Diablo vows a return and a possible future encounter with the web- crawler.
For a back-up story 'Diabolique' is very entertaining, especially if your a Fantastic Four fan. This is Diablo's first appearance in a Spider-Man book and its an interesting one. He doesn't seem to fit the web-crawler's style, but their conflicting views on what is science and what is magic is interesting.
The story ended with a possible re-match which gives some possibilities for future Spider-Man writers looking for a new antagonist.
Entertaining, well-written, well-drawn, and a new character. Very nice job for a back-up story.
Diablo is almost strictly a foe to the Fantastic Four. His first appearance was Fantastic Four #30 which was published in 1963.