In Marvel Comics, Sin-Eater is Stanley Carter, a S.H.I.E.L.D. agent who volunteered for an experimental drug that increased strength and stamina. The drugs were found to have dangerous side effects – but it was too late for Carter, who was driven crazy by the meds.
When Carter tried his hand as a NYPD detective, his madness was triggered by the loss of his partner, and the unhinged Carter adopted the secondary persona of a vigilante who rids the world of “sin” by violently punishing ineffective officials (judges, lawyers, priests) and the criminal elements of society. One of his first victims as Sin-Eater was NYPD captain Jean DeWolff, who was also Carter’s lover. He also killed Matt Murdock’s friend, Judge Horace Rosenthal, putting him on Daredevil’s radar. With his conflicting personalities, Carter ended up in a mental hospital, after battling both Spider-Man and Daredevil.
In the MCU, there’s already a precedent for S.H.I.E.L.D. agents and other special operatives going through radical experiments; we learned as much in Jessica Jones, with the character of Will Simpson, and the experiments that made him an unstable, superpowered soldier.
We’ve been expecting Daredevil season 3 to set up an adaptation of the famous “Born Again” storyline, and there’s certainly room for Sin-Eater to fit into that adaptation. After all, “Born Again” features a Daredevil impostor committing crimes on the behest of The Kingpin; Sin-Eater could easily be the substitution for that forgettable vigilante (who was also a madman). The angle of having a FBI agent who is also a crazy killer would add a serial-killer cat-and-mouse game to Daredevil season 3.
Daredevil season 3 is starting production in October. We’ll keep you updated as more story info is released.
This article was originally published on Comicbook