Did You Know? The Latin word "Argus" refers to a giant in Greek mythology with 100 eyes, Argus Panoptes, who was considered all-seeing. Argus was the servant of Hera, goddess of women and marriage as well as the wife of Zeus. Zeus seduced the nymph Io who was also the priestess of Hera. In order to hide her from Zeus, Hera transformed her into a white heifer and asked Argus to watch over Io and protect her from Zeus.