As reported by Variety and regurgiated around the Internet, Sony is negotiating with Jamie Foxx to join the cast of The Amazing Spider-Man 2 as the villian Electro, which the actor hinted at this morning with his tweet that read "Dressed up as Electro for Halloween last night. Costume fits well." The character's appearance in the new franchise was specualted about after the seemingly unusual amount of lightening during the credits sequence in the first film when a figure in the shadows approached Curt Connors/The Lizard in his cell, asking if Peter Parker knew the truth about his father.
Electro, whose name is Maxwell Dillon, first appeared in Amazing Spider-Man #9 (1964). According to the Marvel Universe Wiki, he "took a job as a lineman for an electric company. While repairing a power line still connected to its spool, Max was struck by lightning. Instead of being killed, the freak accident caused a mutagenic change in his nervous system, allowing him to generate and control vast amounts of electricity. After creating a colorful costume, Max turned to a life of crime as Electro." He has been a longtime nemesis of the wallcrawler on his own and as part of the villanous team known as The Sinister Six. However, the flashy and admittedly not very practical green and yellow mask and costume probably won't be part of the proceeding, to the regret of this writer.
Instead, we are more likely to get the Electro from Ultimate Spider-Man #10 (2001), "a criminal who underwent illegal genetic experiments carried out by Dr. John Skrtic on behalf of industrialist Justin Hammer, who was competing with Osborn Industries to win a lucrative government contract to create a super-soldier serum, as his bio in the MU Wiki states.
But with the film not scheduled for release until May 2, 2014, we likely won't get confirmation for a while, so I and others can still dream about Steve Ditko's version of Electro from our youth.
To tide you over, here's Electro's first appearance in the second story of the second episode of the 1967 animated television series Spider-Man. The villian of the first story is the Lizard, which is quite the coincidence.