Spawn

From: Image Comics
Spawn is one of the few characters that has sort of been all over the place comic book-wise. He was created by former Marvel artist/writer Todd McFarlane for Image Comics. He has appeared in some DC Comics storylines over the years but tends to be separate for Image. Born Albert Francis Simmons, he eventually becomes a Lieutenant Colonel in the U.S. Marines, but eventually joins the Secret Service and CIA. He’s eventually asked to be part of a security group where he becomes an assassin for the nation. Yet Simmons is not a cold-blooded killer as he has an inner morality that tells him this team is overstepping. His commander hires Simmons’ friend and partner to kill him as a result.
Simmons is then burned to death and sent to hell, where he makes a deal with the Devil, Malebolgia. He claims he’ll become a Hellspawn as long as he is allowed to see his wife one las time. Malebolgia agrees but sends him back to the world of the living without most of his memories, along with being in a severely burned body accompanied by a bodyguard. After the resurrection, he’s now called “Spawn.” His powers are fueled by Necroplasm but once it is gone, he’ll be returned to Hell. To avoid this, Spawn uses as little power as he can as he begins to find a new purpose in life. This ends up being to stop criminals, where he often executes some of the worst offenders. All the while, trying to regain some of his memories and his overall past.