Kindred's History
Harry Osborn devised a cruel plan to torture his father Norman and his former best friend Peter Parker. With the help of Mendel Stromm, he created a secret laboratory and created two bodies spliced from Norman and Gwen's DNA: a boy named Gabriel and a girl named Sarah. However, the clones aged and died in quick succession due to Norman's enhanced blood. But Harry wouldn't stop and repeated the process, even though the twins suffered considerably. With help from Mysterio, he brainwashed Mary Jane Watson and Norman with false memories of their respective encounters with Gwen. After Harry's death, his Osborn AI inherited his mission and continued refining the cloning process. Meanwhile, the twins were repeatedly raised into believing their false origin as Norman's twin children from a secret love affair with Gwen Stacy.
Raised to believe Gwen gave birth while in France, the false narrative was that Norman killed her as the Green Goblin to hide the affair and then raised the two children as their 'uncle'. The twins were ignorant of their being raised by the Osborn AI, and aging 2-3 times faster than normal humans to become adults within a few short years. Once in the outside world, Norman lied that Peter was really their father and was responsible for their mother's death.
Once they were physically old enough, the twins set out to kill Spider-Man and baited Peter Parker with an "unsent" letter written years ago by Gwen Stacy, where faint traces of writing on the other side "revealed" text stating that Gwen had been pregnant and had twins. Once Peter collected DNA from Gwen's grave, which "proved" that the twins were her children, Mary Jane's implanted memories activated leading to Norman Osborn as their "father."
Spider-Man met the twins atop George Washington Bridge to expose Norman's manipulations, as Sarah began to believe Spider-Man, while Gabriel was maddeningly convinced of the lie. Wrongly outraged that "Spider-Man" had abandoned them, wrongly believing he was attempting to pawn them off on Norman, Gabriel attacked a reticent Spider-Man who didn't want to hurt him. However, Police became involved and shot the twins, wounding Sarah. While Gabriel escaped and found a base Norman had told them about, he realized Peter was telling the truth and injected himself with Goblin Formula and donned a Green Goblin grey variant costume, becoming the "Grey Goblin" in an attempt to gain the strength to finally kill Spider-Man. Attacking at the hospital where Spider-Man was saving Sarah's life, Grey Goblin was ready to kill Spider-Man in his weakened state when Sarah intervened by shooting his Goblin Glider, causing it to blow up , giving Gabriel amnesia.
After Sarah had secretly taken him home to Paris and cared for him, a drug dealer from their youth came after the two for the theft of $1.5 million dollars of drugs Gabriel stole from him. When the pressure of nursing him and fending off the dealer became too much, Sarah attempted suicide and Gabriel escaped the Osborn estate in a crazed state while she was in the hospital. As he was on the loose, Sarah eventually joined Interpol in an effort to find Gabriel.
Found again by Norman Osborn, Gabriel was injected with a Super-Soldier-Goblin Formula. Years later, a new clone of Gabriel Stacy resurfaced, shooting his half-brother Harry Osborn in a fit of jealousy over Norman's spoils. Leaving him for dead, Gabriel stole the American Son Armor and fled continuing to suffer from the split personality disorder, developed as a result of the second dose of the Goblin Serum. As Gabriel committed crimes as himself, his 'American Son' persona undid the damage, which identified itself as the part of Gabriel's mind that recognized what he was doing was wrong. Recovering from the injury, Harry was informed by his father that Gabriel was his brother.
Gabriel's escapades as both his criminal self and his American Son alter ego continued, often being thwarted by Spider-Man. After kidnapping reporter Norah Winters, Gabriel made another attempt on Harry's life, luring Harry to a vacant warehouse. Harry began to fight Gabriel while attempting to convince him that their father was nothing but evil, but Gabriel ignored him and continued fighting, only for Harry to deactivate the American Son armor via remote. Essentially powerless, Gabriel and Harry became trapped in the ensuing fire resulting from the fight until their rescue by Spider-Man. Gabriel was taken to a psychiatric hospital to receive treatment for his split personality disorder and criminal past. While there, he received a package containing the American Son helmet and a note from Norman saying that he "loved and missed him". However, this left him wondering if he should continue his criminal past or change his beliefs.
After some time, Gabriel, like Sarah, died from genetic instability. At death, Gabriel and Sarah now belonged to Mephisto in hell. Mephisto then used Gabriel and Sarah as hosts for the demon Kindred to direct demonic machinations against Peter Parker, Mary Jane Watson, and Norman Osborn. Confronted by Doctor Strange, Mephisto proposed a contest of champions of sorts and the two watched as the battle played out. When it finally looked as though Peter and MJ would prevail, Mephisto rescinded his anti-aging spell over Gabriel and Sarah and both of the twin Kindreds quickly aged and perished.
