James Sanders, a New Jersey chemist, was chosen by the galactic gamesman as the Grandmaster to be one of the 4 superhuman pawns in a contest of power against Kang. Subsequently embarking on a crime spree, he came into conflict with Spiderman. Thereafter, the Speed Demon became a dedicated opponent of the web-slinger, even serving as a member of the Sinister Syndicate. The Speed Demon met with his most embarrassing defeat when the novice hero Frog Man fell on him. He can often be found in the employ of wealthy financers, such as Justin Hammer.