Crateos

Type: Construct (List)

Race: Animated Object (List)

Monster Manual classification: Iron Golem

Alignment: True Neutral

Boss: Red Named - Quest Boss

CR:  ♠13Elite ●♦24Epic Normal ●♥33Epic Hard ●♠50Epic Elite

Attack: Slam (Bludgeoning)

Special Qualities: DR  ♦1/-Normal ♥5/-Hard ♠7/-Elite ●♦5/-Epic Normal ●♥5/-Epic Hard ●♠5/-Epic Elite, Immunity to Force, Light and Alignment damage.

Habitat: 

• The Snitch

Description: As you smash him up and reduce his hitpoints, his crates get smashed off one by one quite amusingly.
HP: Normal: 500, Epic Elite: ~130,000

Also in the Animated Object monster manual.

Trivia

His name is a play on the name of the character Kratos - from the popular God of War series on the playstation. Only this Crateos is the god of boxes, instead of god of war.