I really don't like these designs
Shark devil shouldn't wear pants. Now it's canon that devils affect the clothes of the host, except when the author needs to show damage. It's just a minor thing, but it's unnecccasary.
The violence devil makes no sense. He wears the mask on his own will, so he's loyal to the bureau. So why nerf him? Or is the the translation of "too strong" wrong, like it should be "too aggressive"?
Spiderdevul looks more like a calamari if anything, but at least the zipper implies we will see his real form before he dies.
And the Angel Devil is just another "i don't care but am super strong" dopey eyes girl. It's an over used trope.