Just A Rather Very Intelligent System, abbreviated to JARVIS, was an artificial intelligence that ran the internal systems of Tony Stark's home and office. JARVIS was also uploaded into Tony Stark's armors to help him with active flight control and defenses. Capable of conversing with Stark, JARVIS took commands from Tony and carried them out, also providing with suggestions along the way. JARVIS was also shown to be legitimately concerned for his creator's well-being.