Bosses

Aside from the Metroids, there are three creatures that make an appearance during Samus’ journey and test her abilities to their fullest. Read on to learn more about them.

Arachnus

A native life-form that swallowed the Spring Ball Item Sphere and inadvertently absorbed its power, Arachnus is an armadillo-like beast that spins and spits projectiles to attack its enemies. The Spring Ball gives it the ability to jump in the air while curled into its shell. Defeating it shakes the Item Sphere loose, giving you the opportunity to take it for yourself.

Diggernaut

The Diggernaut is an ancient Chozo machine created to dig out the caverns of SR388, giving the Chozo more space to build their settlement. The Diggernaut has since malfunctioned, or was set with some sort of security protocol. Whatever the truth is, the Diggernaut serves as a thorn in your side during most of your mission.

Proteus Ridley

Samus’ greatest nemesis makes a return in this game to put a stop to her Metroid eradication. It was Proteus Ridley, Mother Brain, and the Space Pirates that harnessed Metroids for evil during Samus’ first mission, and they clearly found it to their liking. Proteus Ridley’s not about to allow Samus to wipe out such a formidable source of power and an equally devastating weapon—not without a fight.