Chainsaw Man

[DarthEnderX]

Yeah, if they have umbrella concepts like that, one would assume there's a Death Devil that's by far the most powerful.

And do devils stop at things that are real or can it be fictional things, too?

We've already seen Zombie Devil.

Btw has it been made clear yet whether Makima is a human with contracts or a devil herself?

Hasn't been specified, but seems unlikely they'd let a devil run an anti-devil department.