In the first two phases of the battle, Proteus Ridley utilizes his signature fireballs against Samus, either as individual blasts or in arcs of five. These flames appear blue, unlike the traditional orange-red in previous battles with Ridley. When performing the attack, Proteus Ridley will take to the air and charge fire energy in his mouth, before firing it at the ground on top of Samus. It sends a shockwave from both sides of the point of impact. Proteus Ridley will unleash the fireball shockwave three times in a row before resorting to other attacks.
The attack deals severe damage to Samus if it hits her, and the only way to avoid it is to Space Jump away from the projectile and point of impact.
Ridley's clone in Metroid: Other M has a similar attack. When taking to the air, he will charge up a massive fireball and lob it at the center of the Geothermal Power Plant, causing a large shockwave that Samus cannot SenseMove away from, and must jump over to avoid it. However, this fireball is red-orange in color and larger in size. Ridley uses this same attack on the Pyrosphere stage in Super Smash Bros. for Wii U.
"Proteus Ridley has two new attacks to watch out for: the fireball shockwave and the hyper claw slash. You know the fireball shockwave is coming when Proteus Ridley flies overhead and his mouth fills with those familiar purple flames. His mouth points to the ground, which is how you differentiate this new attack from his arcing-fireball attack. When you spot the tell, start Space Jumping away from him. He shoots the fireball straight to the ground, creating a shockwave that ignites most of the ground space visible on your screen."
- In Metroid II: Return of Samus, the Omega Metroid has a projectile attack that functions almost identically to Proteus Ridley's fireball shockwave. The only differences are that the Omega Metroid's attack is aimed at Samus instead of always being aimed straight down, and the shockwave size is much smaller.
Little Birdie • Mystery Creature • Clone • Neo-Ridley
Fake Ridley • Ridley-2 • Ice Ridley
Ultrathermal Flamestrike Projector
Multi-Missile System • Phazon-enhanced armorskin
Fireball shockwave • Hyper claw slash • Arcing-fireball attack
Rocket • Spike Bomb
Vs. Meta Ridley • Omega Ridley • Nemesis Ridley
Greed • Judge Racklas • Space Dragon
Chapter 17 • A Piercing Screech • 65: Ridley