Infinity Big Bang Storm

Infinity Big Bang Storm was the declared name of the most powerful attack unleashed by the strongest weapon the Anti Spirals summoned, the Grand Zamboa.

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.