Spider-Man has a complicated history with clones. One of his greatest foes, the Jackal, turned the Web-Slinger's life upside down by using his genetic data to create multiple copies of him. The most notable of these is Ben Reilly, the former Scarlet Spider who briefly replaced Spider-Man and now goes by the villainous moniker Chasm after having his memory erased. There's also Peter's scarred, failed clone Kaine, who began as a villain but then reformed to become the second Scarlet Spider. Many readers, however, may be unaware of Peter Parker's third clone, an experiment known as Spidercide, who possesses the ability to manipulate his molecular structure to achieve any shape or form. While long believed dead, he is now confirmed to return in the new upcoming series Spine-Tingling Spider-Man (by Saladin Ahmed and Juan Ferreyra). Whether Spidercide will emerge as friend or foe, and what this return means for Spider-Man remains to be seen.
Source：https://www.cbr.com/spiderman-spidercide-humanity-marvel/
