Blast vs. Awakened Garou

Blast vs Awakened Garou is a brief battle between the number one S-class hero Blast and Garou in his Cosmic Fear Mode.

Prelude
As Garou approaches the remaining heroes, Child Emperor and Waganma start to bleed from their noses. Moments later, the two children collapse onto the ground, unconscious. Despite Garou stating that he is in control of his own actions, Bang still believes that there is something evil within Garou, and that this evil is controlling him. Suddenly, the S-Class Rank 1 hero, Blast, teleports into the area and introduces himself to Garou. He attempts to reason with Garou, stating that he is being controlled by the mysterious entity known as "God", and emphasizes that in Garou's current form, any attack unleashed would endanger all life on Earth. Although Garou still retains his careless demeanor, he is seemingly somewhat intrigued by what Blast has said and asks what he should do about it. Blast offers to transport Garou into another dimension, but the young martial artist declines the offer and instead boasts about how his mere presence is causing people to die, believing that he has finally become the symbol of fear. Bang attempts to stop Garou from proceeding, but suddenly Genos, using the remaining bits of power he has left, hurls himself towards the seemingly invincible enemy and headbutts him in the chest, although to no avail. Garou grabs the young hero by the hair, but before anything can be done, Blast intervenes and a battle between the number one hero and Garou begins.

Battle
Blast fires his Dimension Cannon towards Garou but the Hero Hunter quickly dodges the blast while commenting it to be a lame attack. However, a portal appears above Garou and transports him to where Blast is followed by a powerful punch from Blast called Gravity Knuckle straight into Garou's face, forcing him to release Genos. Blast summons another portal to where Garou is flying from the force of the attack and redirects his trajectory horizontally to have him meet yet another punch to the face from Blast.

Blast continues this pattern as he rapidly pummels Garou in the face while bringing him back to meet this attack using his dimensional portal abilities. Before long, Blast quickly seals the two portals through Garou with the intent of sealing him within the dimension. However, much to Blast's shock, Garou emerges from a portal of his own making, having mimicked Blast's powers and techniques. He wields Blast's Gravity Knuckle in his right hand and All-Life Eradication Fist: Nuclear Fission in his left hand. This is followed by a rapid barrage of attacks from Garou combining both his own abilities as well as Blast's known as Nuclear Fission: Gravity Knuckle. This forces Blast to be on the defensive as he summons multiple teleportation rings to redirect Garou's attacks elsewhere but at a far and safer distance away from the people as well as the Earth. Another portal is summoned by Blast above the sky where the explosions occurred whereby it absorbs the explosions in order to prevent any further destruction to the environment.

Nonetheless, the force of the attack knocks both Garou and Blast away from each other when the portal Blast used to ward off Garou's attacks dissipates between them. Blast fears that if this battle endures for much longer then not only will the gates that seemingly keep "God" at bay weaken but everything on the planet will die from the radiation Garou is emitting. Garou commends Blast as he sees that he's not the number one S-Class for nothing, but Garou realized something and decides to shift his focus on Saitama.

Aftermath
Garou realizes that Saitama was still holding back and thus decides to kill Genos in order to draw out the full power of Saitama, who is still nowhere to be seen. Garou then impales Genos through the chest and rips out his "Core." Some time later, Saitama returns to Earth unscathed from Garou's Gamma Ray Burst as it begins to rain a black fluid likely from the nuclear fallout of Garou's attacks. Seeing what seems to be Genos' lifeless corpse, Saitama questions if he truly has a hero's intuition. Saitama, now with a serious expression on his face, unleashes a Serious Punch towards Garou, who responds with a Serious Punch of his own, having mimicked Saitama once again using Mode: Saitama and their battle resumes. Blast immediately and fearfully realizes that the two colliding attacks will shatter the Earth.