Lagarza is a captain in Homeland Security; he's one of the few members who shows his face in public. The majority of Red Hats wear ski masks when they're in uniform. He is a high-ranking special squad member of the Transitional Authority in the Los Angeles Colony called the Red Berets, which are the Red Hats' Special Ops squad.
Lagarza doesn't say much, but he seems happy to hit women in the face with the butt of his rifle if they dare to question what he's doing. He's trusted by the Proxy Governor, Alan Snyder and often seen protecting him with his special squad. In the episode when Snyder was trapped in The Yonk with the Bowmans, ("YOKNAPATAWPHA") he wouldn't let Will Bowman call anyone but Lagarza.