Although Incarnation Randy could not emit energy outside of his body, he could use them to strengthen his body internally. Thus, he was able to fight against the now slowed red-scaled demon after his transformation.
One would wonder how it was possible to fight against the transformed, red-scaled demon if he couldn't do anything to it or defend against its attacks, but the answer to that was simple.
While originally, he was confused about his state of mind coupled with his inability to use external skills— the skills that could be projected outward, it seems he was capable of using internal skills— the skills that could only affect the physical body from the inside.
After discovering this, incarnation Randy decided to go all-in with the one particular skill that he could use— Body Strengthen Skill.
