Ever since his mind underwent some inexplicable changes, his influence on the X-Factor deepened. In particular, anything he imagined into existence took on a life on its own.
What did this mean?
It meant that his images took back their sovereignty! Their history, behavior, attitudes and aspirations developed on their own without conscious input from Ves. He might have created them in his mind, but their transformation into an insubstantial lifeform shielded them from any further alterations.
Rather than describe them as his creations, to be altered or discarded at will, they became thoughts given form, that could not be violated on a whim.
Naturally, Ves still remained the ultimate arbiter of their lives. As long as they took up space in the real estate of his mind, he could wipe them all away if he wished.
"Not that it's desirable to do so."