What substance is the Kragle revealed to be in The Lego Movie?

The Kragle is revealed to be Krazy Glue in The Lego Movie.

The Kragle is President Business’s weapon for freezing the LEGO universe into a perfectly ordered, permanently fixed state. For much of the film, its name sounds like a mysterious superweapon. The reveal turns the threat into a visual joke: the supposedly powerful substance is actually a familiar tube of Krazy Glue with part of its label obscured.

The gag is central to the film’s contrast between imagination and control. President Business wants every brick, character, and construction to remain exactly where he places it, while the heroes argue that LEGO is valuable precisely because it can be rebuilt in countless ways.

“Super Glue” is an understandable but imprecise answer because it describes a general category of strong adhesives. The film’s specific joke uses the brand name Krazy Glue. The final confrontation also depends on the Piece of Resistance, which can neutralize the glue and help restore movement to the LEGO world.