Acme:
I'm assuming that Grendel is part of the roaming communities (ain't gonna use the G word) of northern CalFree?
He is, good eye.
"Nomads" is probably too romantic a word for a pack of itinerant agg workers and self described "free men", but it's what they would choose. Hard to find decent paying work without a SIN of course.
They dabble in whatever might make some Nuyen, vehicle repair, construction, etc.
His particular Clan has some strong ecological principals baked into their culture. And they have a few among their number would would probably pop up as "eco terrorists" in the right databases.