Super Stretch: Professor Floyd Jenkins was working on a chemical that could rapidly heal fatally wounded allied soldiers. When Nazi spies break into his lab to steal it, He quickly drinks it thus making him swallow his gum. They spies rough him up & are chased offed be people checking to see what all the noise is. The formula didn't do what the Professor had hoped but it did have some kind of chemical reaction with the gum & gave him elongated powers. The effects do ware off about every 30 days. So he has to repeat the process to maintain his powers. After doing this for so long he also has to do this to keep his body from turning into a pile of goo. He also developed a costume that can stretch with his body. Extreme heat & extreme cold also affect him.