I'd counter-argue with; Police.
If it's so dark and dystopian, why would anyone become a cop?
Like my two examples of both Appleseed and GITS, both of them features the main protagonists to be law enforcers.
Motoko is heavily cybered up BUT is the world dystopic? Why? Why not?
And if that's not Cyberpunk, then what is it?
A lot of the stories revolving Cyberpunk features an anti-hero as protagonist living for him/herself but that doesn't mean that everything has to follow that goldenrule of thumb.
Why would anyone become a cop? So that there's cops! (be they the enemy or whatever).
Now about how dark are Appleseed and Ghost in the Shell I'd say VERY. The Olympus of Appleseed is this apparent utopia (and they do many things well) that is ruled and administered by bioroids. But what are bioroids? Well, bioroid obviously comes from biological android. You can make an android with oganic parts. But what's the cheapest approach? Clone people (and sometimes splice genes for combat bioroids), select them for a task and "educate them from birth" and somehow plant (pharmacologically?) devices that prevent them from rebelating against the original species (humans). So are these high ranking and highly regarded functionaries or are they slaves that don't live that bad?
And now for the main course, the cops. You can clearly see how Deunan and Bri are the prototype of the recruits of the OPD, SWAT, and ESWAT. They survived the badlands with their strenght and aggressivity. You can also read a cop in a Landmate enjoying his job killing a terrorist because "they only need to get one alive". And man, they take interventionism to the next level! They want to take their "flame of Prometheus" everywhere with a police that has a military grade dotation.
And Ghost in the Shell: well, Shirow and others made the Section 9 somewhat pleasant to hang around with, as we would be spending some time with them, but they're neither the paragon type or are as highly regarded by the masses. We see the Major be attacked with an axe by antimilitaristic groups, we see how far different sections can go when stepping on each others' jurisdictions, we see them perform state murders and some people are offended when they read Batou (in the episode Robot Rondo) or hear him say (in Innocence, partly based on this chapter) something harsh to a southeast asia slave child (here he goes all Judge Dredd on the kid, not seeing the desperation in her actions, only that what she did to survive was illegal and harmful to others).