Plumber Headquarters

The Plumber Headquarters is a location that appears in Ben 10: Alien Swarm and Ben 10: Omniverse. It is a functional Plumber Base, lead by the Magister of Earth, Max Tennyson. One of the known entrances is through the Max's Plumbing shop bathroom.

History
It was first seen whenBen went toGrandpa Max to ask about the Nanochips.

It re-appeared in The More Things Change: Part 1, when Ben visited his grandfather, Max.

Ben was training with Blukic and Driba. Khyber infiltrated the base to get informations about Ben and Malware.

Rook and Ben checked Dr. Animo's cell.

It was invaded by Dr. Psychobos and his robots. After the Omnitrix malfunctioned, some prisoners were transformed into some of Ben's aliens. The prisoners tried to escape from the prison, but were defeated by Ben, Rook and their team.