Infinity Big Bang Storm

Infinity Big Bang Storm was the declared name of the most powerful attack unleashed by the strongest Gunmen the Anti-Spirals summoned, the Granzeboma.

The mech grabs two nearby galaxies, crushes them together, and compresses their matter and energy into a ball. It then unleashes the resulting pressure as an enormous blast of raw energy, equivelent to the energy present during the Big Bang; as Tengen Toppa Gurren Lagann is shielded from this by Lazengann, new galaxies can be seen being born as a result of this energy being unleashed.