Ben Reilly was the first successful clone of Spider-Man created by the Jackal (Miles Warren). He became the superhero known as the Scarlet Spider, Reilly later replaced Peter Parker for a time as Spider-Man. Ben met his ultimate demise in the fight against the Green Goblin which led to Peter becoming Spider-Man once again.
After his death at the hands of the Green Goblin, Miles Warren collected Ben's dissolved remains and brought him back to life through a new cloning procedure he devised that allowed his subjects to retain old memories, in the case of Ben, to the point of his death. As the procedure caused the clones to suffer from cellular degradation, Reilly was constantly killed and resurrected by Warren in an attempt to find a cure for it. Reilly managed to break free from the shackles used to restrain him and attacked Warren, almost killing him. However, at the last second, Reilly realized there were other ways to deal with Warren and decided to knock him unconscious instead and cloned him. Tricking Warren into thinking he was a clone, Reilly convinced him and his clones to work for him in return for the pills he created to keep the cellular degeneration at bay. Ben took on the identity of the Jackal, impersonating the real Miles Warren, and created New U Technologies with the intention to use Warren's new cloning technology for good.
Current Version:
Chasm
Former Versions:
Scarlet Spider
Spider-Man II
The Jackal II
Spider-Man (Beyond Corporation)