After the Chaos Supreme Metac devoured Fenrir, it took the position of the base Supreme Metac in the 4-D prototype. Then it began to swell as Loki pumped lifespan into it.
The Chaos Supreme Metac had absorbed 83 Supreme Metacs in total. All of the Supreme Metacs it absorbed were Cosmic Daos too, so its dimensions were 747,747,1(x,y,z). After absorbing lifespan, its dimensions expanded to 747,747,747.
As it expanded, it filled up the 4-D prototype. The 4-D prototype, in turn, lit up and solidified as the Chaos Supreme Metac swelled within it.
In the past, whenever he used Supreme Metacs to occupy space within the 4-D prototype, he always needed to twist and turn them to make them fit in the cubes.
Take Fenrir, for instance. At its full size, it was 9,9,9 for a total of 27 units of commonality. He had used it as the base to occupy the first cube. But because it was bigger than the first cube, he had to contort and stretch it to fill up the other cubes.
