"Behold the Underminer! I am always beneath you, but nothing is beneath me! I hereby declare war on peace and happiness! Soon, all will tremble before me! "
—Jimmy's monolouge.

The Underminer is a minor antagonist in The Incredibles and Incredibles 2, and the main antagonist in The Incredibles: Rise of the Underminer.

The Incredibles

After a Elementary school track meet, he emerges from underground with his drill and declares war on the surface.

Incredibles 2

Hd goes back underground and heads for the bank, which he sends underground via explosives. Once inside he sucks the money with a vacuum, and Mr. Incredible, into his vault and leaves. However Mr. Incredible breaks out and fights him, damaging the drill’s controls causing it to surface and destroy parts of the city. He escapes soon after.