This robot paper model is Behemoth, named after the creature mentioned in the Book of Job, appears at the end of "The War of Paradigm City" of the animated television series The Big O, the papercraft is created by WebDude.
Behemoth is many times larger than the other megadeuses, and bears large drills on its shoulders and a quadruped design. The Behemoth is activated by Vera Ronstadt, the leader of the Union, and is only seen for a brief time. As Big O lifts it into the air it is crushed under the weight of debris falling from above the city. [Source: wikia]