Corrosive wasn't able to kill Pablo with his Ego because Draxus had come into play.
Draxus had swallowed the Cannibal King inside his shadow and after Pablo was free, he threw the king out of the shadow.
But instead of using his Ego again, Corrosive picked up his battle axes and bolted towards Pablo.
But since Corrosive had used his Ego on Pablo, it was only fair that Pablo returns the favor as well.
So, he used the Ego he had copied from none other than Admiral Harlia.
The one that made the enemy soldiers burst.
But all this time, Pablo used that Ego in very less amount. He hadn't gone all in with it. He had used it on Malvador but the amount of power didn't work on him. Also, he had used it on Corrosive as well, but it hadn't worked on the Cannibal King too.
Pablo was constantly learning about the Ego through trial and error as to what amount does damage to what person.
