Description
Significantly larger and more dangerous. They possess a lightning attack and are much more durable. Their attacks deal substantial damage.

Phases
None. They have a single attack pattern.
Weaknesses
Missiles are essential. Charged shots are also effective. Vulnerable when attacking.
Strategy
Gamma Metroids require a combination of charged shots and missiles. They will often charge at you or unleash a lightning attack. Dodge these attacks by jumping or moving away. Their vulnerable spot is often their underbelly or head when they are in an attack animation. Unleash missiles during these openings. It will take a good number of missiles to bring them down, so ensure you have a healthy supply.
Rewards
Significant lava level recession, revealing major new sections.