In God of War III, Kratos releases the evils from Pandora’s Box. The 2010 action-adventure game reworks Greek mythology into the continuing story of Kratos’s war against the Olympian gods.
Within the game’s backstory, Zeus hides powerful evils inside Pandora’s Box after the Great War between the gods and the Titans. Kratos opens the box during the events of the first God of War, absorbing its power and using it against Ares. God of War III develops the consequences of that act and follows Kratos’s assault on Mount Olympus.
The game’s Pandora is a fictional reinterpretation of the mythological figure. She is portrayed as a young guide whose sacrifice is necessary for Kratos to reach the box and defeat Zeus.
This answer is Kratos rather than Zeus because Zeus conceals the evils, while Kratos is the character who opens the container in the game’s narrative.