During the secret wars, Spider-man came across a symbiote thinking it was a special kind of cloth. His costume shredded, Spider-Man thought he obtained a new black and white costume (similar in design to the new Spider-Woman) from a costume making machine. After returning home to Earth, Peter discovered his costume was actually a living entity, feeding off his adrenalin as it possessed his body while he slept. Thanks to Mister Fantastic, the costume was removed by sonic blasts, and captured. It escaped, still emotionally dependant on Spider-Man and reattached itself. Spider-Man forced it off by the loud noise atop the bell-tower of a church (where the alien costume would later attach itself to Eddie Brock forming Venom). Since then, Smbiotes have merged with various humans to create other villans, such as Carnage and Anti-venom.