Matt Cordell, Maniac Cop
Now here was something you don't see every day: a maniacal, undead cop in uniform, roaming around, killing people in gruesome ways, seeking vengeance for an injustice placed upon him when he was a normal man. Hardly a role model, Officer Matt Cordell was nonetheless a well respected cop when he was normal, arresting, charging, and taking out bad guys with a flair for the unconventional. Like Dirty Harry, however, he disregarded many of the rules, and this got him in trouble with his superior officers.
Unfortunately, his superiors were more corrupt than he ever was, and framed him for things he didn't do in order to land him in prison. Cordell did not forget this, not even after some thugs he once arrested murdered him in the prison showers, and started his own vendetta of justice after coming back from the dead. But despite his random killings and savagery, he was honored after his next "death" at his burial for his goodness as a normal cop, and every police officer knew they had to fight the "maniac cop" within themselves to avoid becoming another Matt Cordell. Even Lytton's police knew this.