Personal Info:
Real Name: Unknown
Also Known As:
Place Of Birth: Unknown
First Appearance: Uncanny X-Men Vol.1 323
Known Associates:
Group Affiliation: The 198, Gene Nation, Morlocks
Base Of Operations: New York City, New York
Grudges: X-Men
Creators: Scott Lobdell, Bryan Hitch, and Cam Smith
Possession: Composed of blue ectoplasm, Sack is capable of melding himself inside a human body and taking possession of that body. Sack can wear a human body, always killing its host, until it is killed.
Body Armour: Sack’s skin is pliable and transparent, allowing bullets to pass through without harm.
Healing: Sack quickly heals from any wound.
Sack is a mutant and a member of the Morlocks . When the mentally unstable Mikhail Rasputin flooded the Morlock tunnels, many were believed dead. However, at the last instant Mikhail used his powers to open a portal into a parallel dimension dubbed The Hill. After the first generation of Morlocks lived in peace, the young grew up disenfranchised, angry, and full of rage that their elders had abandoned Earth so easily.
In the Hill dimension, time passed quickly as decades would flow by in a matter of Earth months. The children were kept in a stony citadel, where they grew. Life for the Morlock youths was one of constant combat as they struggled and fought to make it to Mikhail's citadel at the top of the Hill. When young mutants manifested their powers, they were immediately required to enter the combat. Those that reached the top of the Hill were required to continue fighting for their place there, even when they became Mikhail's personal guards.
They found a way to return to Earth, forming Gene Nation so that they could get revenge on the humans.