I had an idea for an anti-villain who could possibly cross paths with Wolverine, Daken, Deadpool and other wreckless heroes, anti-heroes or villains with healing factors. I thought of a remarkably skilled surgeon who uses his clever wit and skills; along with his encyclopedic knowledge of human anatomy, drugs and toxins to kidnap, incapacitate and continuously harvest organs and blood from these characters to donate to people who can't afford them but deserve them. Perhaps he could later develop into a Punisher-like figure, who starts taking down thugs and other ne'er-do-wells and saving lives with their organs. My various ideas on his abilities and character can be put into the following bullet points.
He may resent characters like Wolverine or Deadpool who, even though they are "heroes", regularly kill and have dark pasts.
He doesn't have a super hero identity. He simply uses stealth and makes people go missing.
He's skilled in combat but not enough to fight Daken or Sabertooth in unhinder combat, so he relies on using drugs to slow them down and then use his knowledge of the human body to stab into their spines or something and incap them.
He definitely has to be modeled after Giancarlo Esposito.
He disconnects himself from viewing his victims as people and genuinely has good intentions, wanting to use these peoples' powers to save lives.