But he was still roughly his original height of 1.8 meters!
What extended all the way to the ceiling was a phantom image!
It was as though a demon god had been summoned to possess him, a translucent outline of energy appearing behind him.
"See?" Red clouds associated with Dynamax also swirled around Wude's body. "What we want is the boost in combat power from Dynamax. As for their actual bodies, we can choose whatever form lets the Pokémon move best!"
In other words, Machamp's original size barely changed, while the tremendous energy generated by Dynamax gave him a corresponding boost.
"You can even do that?!"
"Heh, don't underestimate the bond that lets Trainers and Pokémon grow together!"
Twenty thousand years ago, Eternatus arrived in the Galar Region of the Mega Evolution World Line aboard a meteorite;
Three thousand years ago, Eternatus absorbed energy to sustain itself, emitting an eerie red glow and triggering the "Darkest Day" incident. In other words, an eternal night with nothing but red light in the sky.
From then on, changes in energy caused some Pokémon to involuntarily grow enormous, a phenomenon known as "Dynamax."
That was the earliest form of Dynamax in its purely natural state, before humans had harnessed or studied it.
As Trainers, Pokémon, and related technologies advanced, Dynamax became increasingly controllable.
Since people could invent a "Band" that, once charged with energy, allowed Pokémon to Dynamax anytime and anywhere, researching and improving the form of Dynamax itself was perfectly normal too.
Three thousand years later, the technical experience accumulated by Trainers and Pokémon allowed Wude to use the form of Dynamax best suited to battle-the way Machamp looked now.
It was essentially Dynamaxing an energy body, also known as Dynamax Form. Combat power temporarily increased, while the actual body could be