Who is Da5id from Snow Crash and what is their importance?

Da5id Meier was the founder of Black Sun Systems, a programming firm that helped to develop the Metaverse. This venture made Da5id and his employees rich. Hiro and Juanita also worked with Da5id at Black Sun Systems. Da5id was the proprietor of The Black Sun in the Metaverse. Da5id was once married to Juanita. Da5id viewed the Snow Crash virus from the card that Raven gave him, and the virus caused both his computer and his brain to crash.