Hydra Cannon

The Hydra Cannon is one of the single most powerful weapons in existence. A combination of the Mini-Con weapons, The Star Saber , the Skyboom Shield and the Requiem Blaster, the Hydra Cannon requires no fewer then NINE Mini-Cons to form (hence its name) and possess enough raw power to destroy an entire planet!

It's pretty strong, yo.

From Teletraan I: The Transformers Wiki, a Wikia wiki.