Dark energy wasn't unique to Dormammu. Nor had Dormammu always been the ruler of the Dark Dimension. He had originally been a sorcerer who had come to the Dark Dimension by chance.
Perhaps because he was exceptionally talented and had a particular fondness for dark energy, he abandoned his human body and completely merged with the Dark Dimension, becoming its ruler—a deathless existence beyond time.
In theory, as long as you knew the structural characteristics of an energy, you could potentially imitate it. For Earth's technology today, or most civilizations in the universe, converting one form of energy into another was a major challenge. But for the AllSpark's energy, transformation and mimicry were among its most fundamental abilities.
That was why Luo Xia could now easily convert the AllSpark's energy into dark energy. And according to The Ancient One, dark energy was the only special energy she knew of that could directly strengthen both the soul and the body.
With Luo Xia's help, Tony's primary personality began to swell rapidly, its previously transparent body growing until it was even taller and stronger than his negative personality.
"Hey, brother, you had a pretty good time beating me up just now, didn't you?" Tony said with a grin at his negative personality.
The two giants threw punches at the same time. Even in their soul forms, Luo Xia could still sense the tremendous shockwaves they created. This time, however, Tony's primary personality clearly had the upper hand, punching his negative personality away.
Tony didn't let up. He hurried after it, grabbed its arm, and swung it around, slamming it into the ground. Although their fighting styles as giants were somewhat similar, they were souls, after all, and that made plenty of things different.
Tony slammed his negative personality into the ground, but