Any group of assassins/mercenaries in the Dredd-verse?

[Sandman1]

The picture of the Sector Zero assembly is still quite opaque after a perusal of Trifecta. Are they all Black Ops defects? Do they have any leader? Can I find any more elaborate information about them in other stories?

[Smith]

I did miss this.

[Richard]

MOB BLITZERS!

Where can I read about them?

Also Emerald Isle progs 727-732 and Ex-Men prog 818.

[Richard]

You think the Gila Munja or some hired killer from a criminal organization is capable enough to murder someone high up in the food chain, like the head of the SJS or even the chief judge?

The Supreme Judge of East Meg Two was killed by Jonni Kiss (a lone hitman, who used some Gila Munja as a diversion).

[metalmarc]

What About Jonni Kiss? From The Goodnight Kiss?

Just started reading it for the first time now, does he count

[Sandman1]

What About Jonni Kiss? From The Goodnight Kiss?

Just started reading it for the first time now, does he count

Solo artists doesn't count. I'm looking for a high-quality collective of employable killers.