Devil Hunter

Devil Hunters are individuals (human or otherwise) who, as the name would imply, have taken it upon themselves to fight against Devils whenever a threat related to them should arise. They tend to use contracts with Devils as means of standing a chance in combat against their monstrous opponents, giving them a massive advantage over standard law enforcement when Devils should appear.

Due to Denji's role as a Devil Hunter in both the Private Sector and Public Safety, they play a pivotal role in the story of Chainsaw Man.

Public Safety Devil Hunters
The Public Safety Devil Hunters are an organization of government-sanctioned Devil Hunters who function similarly to a Fire Department or Police Force. They're sent to dispatch Devils in the event of a threat to the public and are tasked with resolving devil-related incidents on a smaller scale. Though the threat level of the Devils they persue can varry, they're generally sent after bigger theats than those working in the Private Sector, according to Himeno.

A notable devision of Public Safety Devil Hunters lead by Makima employs individuals who are outliers to most of the organization at large, such as Denji, a living human who previously fused with a Devil and Power, a fiend.