Huh, this is interesting. Got any more details about these guys?
Viewing post in NHP Shaka's OpFor: The House of Sulfur comments
they're a lesser sub-house of the House of Smoke, and generally are unpleasant characters. absolute villains. not-nice-nincompoops.
they also are way too into colonialism, genocide, and genetic/biological abuses.
they are not heroes. they are villains. they were made to be shot at.
go check out the setting they were made to be the baddies for here. :)