History
Presumably, the life of Sif mirrored that of her Earth-616 counterpart before the outbreak of the zombie plague. Like all Asgardians, she became a zombie once Odin had been infected with the zombie virus. Sif was among those Asgardians that were searching for Loki and destroyed Zephyr Zog's private train looking for him. She and other Asgardians attacked the surviving members of the Ducky Dozen as they were looking for a way into the Nazi secret headquarters located in the Bavarian Alps and was presumably among those zombified Asgardians mowed down by Libertas and Howard the Duck.[1]