A guise of the Goa'uld Seth. Following the defeat of his forces in ancient Egypt, Typhon later appeared in Greece. This god was also represented by a likely fictitious animal. One of Typhon's last legends stated that he killed three hundred of his followers and fled Greece.
See also: Seth
Seth - Daniel traces Seth's movements throughout history, finding a reference to a Greek god with similar back stories -- likely the missing link -- to Seth.