The Hills Have Eyes Pack's Brief Timeline

1909 - Fred is born.
1924 - The Reaper, Fred's first son, is born.
1926 - Papa Jupiter a.k.a. "The Devil Son" is born.
1938 - As a child, Papa Jupiter kills the livestock on his father's farm and later murders his sister. Fred attacks his son with a tire iron and leave him in the hills to die.
1944 - Papa Jupiter, still alive and living in the Hills, mates with a depraved, alcoholic prostitute known as Mama.
Together, they have three sons: Mars, Pluto and Mercury, and an abused daughter, Ruby. They survive by stealing and cannibalizing travelers.
1977 - The events of "The Hills Have Eyes" occur.
1980 - The Pack reforms, now led by The Reaper.
1985 - The events of "The Hills Have Eyes II" occur.