Laguna or Lagna Harvey is big figure in the transportation business since he provides the train units for the Orbital Elevators. In secret, he's a member of Celestial Being and actually the traitor. Using stolen data, he financed the construction of the false GN Drivers and Solar Furnaces. He also provide information to the Trinity Team data before they go out in missions. He is also the one who contacted the three superpowers and showed the locations of the 30 false GN Drives.
"That is Tengen Toppa! That is Gurren Lagann! MY DRILL IS THE DRILL THAT WILL PIERCE THE HEAVENS!"