|**Electro Chronology**|||||

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|Marvel Age Introductions by On-Sale Date|||||
|1963|NOV 12|ASM009|Amazing Spider-Man|[**INTRO**Electro]|
|1964|APR 02|DVL002|Daredevil|xo[Electro] xo[Fantastic Four •Human Torch • Invisible Girl • Mister Fantastic • The Thing]|
|1964|JUN 11|ASMA01|Amazing Spider-Man Annual|[**INTRO**Sinister Six • Electro • Vulture • Kraven • Doctor Octopus • The Sandman • Mysterio] xo[Fantastic Four•FFROS•Human Torch • Invisible Girl • Mister Fantastic • The Thing]  [The Avengers•AVNROS•Captain America • Giant-Man • Iron Man • Mighty Thor • The Wasp] [The X-Men•XMROS•Professor X • Angel • Beast ª Cyclop • Iceman • Marvel Girl] • Doctor Strange][Chameleon][Green Goblin]|
|1965|JUL 1|FANA03|Fantastic Four Annual|[FFROS•Human Torch • Invisible Girl • Mister Fantastic • The Thing] [Patsy Walker] [Hedy Wolfe] @[Doctor Doom • Puppet Master • Red Ghost • Super-Apes • Mole Man • The Mandarin • Black Night • Kang • Awesome Android • Grey Gargoyle • Super-Skrull • Hydra Agents • Cobra • The Executioner • Enchantress • Mister Hyde • Electro • Unicorn • The Melter • Beetle • Diablo • The Eel • Mad Thinker • Human Top(Whirlwind) • Attuma • Porcupine] [The Avengers•AVNROS•Captain America • Hawkeye • Iron Man • Quicksilver • Mighty Thor] • SHIELD • Nick Fury • Gabe Jones • Dum-Dum Dugan • [The X-Men•XMROS•Professor X • Cyclops • Marvel Girl • Angel • Beast • Iceman] • Doctor Strange • Daredevil • Karen Page • Foggy Nelson • Amazing Spider-Man • Namor the Sub-Mariner • Incredible Hulk • The Watcher]|
|1967|JUN 29|DVLA01|Daredevil Annual|xo[Emissaries of Evil • Electro • Leap-Frog • Stilt-Man • Matador • Gladiator]|
|1969|DEC 16|ASM082|Amazing Spider-Man|xo[Electro]|