Elektro is a fictional robot that appears in comic books published by Marvel Comics. Elektro first appeared in Tales of Suspense #13 (Jan. 1961), in the seven-page story "Elektro" by writer-editor Stan Lee and penciler Jack Kirby.
Years later, Mr. Fantastic, leader of the superhero team the Fantastic Four, wipes Elektro's flawed programming and replaces it, and then "enrolls" Elektro in his rehabilitation program, which involves Elektro being reduced to human size and stripped of his powers so as to allow him to enter human society. Elektro takes up a job as a mail attendant in the Fantastic Four's headquarters, the Baxter Building, and later joins his fellow rehab-program creatures, the extraterrestrials Fin Fang Foom, Googam and Gorgilla, to defeat the microscopic alien conqueror Tim Boo Baa.