Who is Dr. Emmanuel Lagos from Snow Crash and what is their importance?

Lagos was a researcher at the Library of Congress when it became part of the Central Intelligence Corporation. Lagos made a living collecting and analyzing information. Lagos gathered all of the information that Juanita gives Hiro about the Sumerian myth and L. Bob Rife. Lagos was referred to as a gargoyle, because he wore computer and surveillance equipment all over his body so that he could collect data wherever he was.