AMAZING SPIDER-MAN (1963) #208

The birth of Fusion! Twin brothers Hubert and Pinky Fusser lead drastically different lives; Hubert is a scientist at a research firm, while Pinky is the janitor for that firm. After one of Hubert’s radiation experiments goes awry, the brothers merge into one energized being! Spider-Man takes on the energy-absorbing blasts of Fusion…and their dual personalities! Fusion! On the way to the Daily Globe, Spider-Man notices a car pile-up, and decides to help by moving the smashed cars out of the way.… Notes Features the Hostess Twinkies Cakes ad, « Captain Marvel Defends The Earth! » Mary Jo Duffy’s assistant editor credit taken from letters page header.