[@Starfall] Long story short, Virtuoso is the Apocalypse of my main continuity. He integrates every star into a massive network of Dyson Spheres. Using the energy gathered from those he's able to simply teleport them to the center of the universe in an unimaginably large superstructure. They're interconnected and attached to his central form. This central form then produces an uncountable number of collection machines formed out of compressed photonic constructs, also known as hard light. These collection machines sweep from the center of the universe outwards at FTL, using the Magnetic field of the universe itself to overcome the seemingly impossible. 

Once they're sent outwards, they move from outside of the universe inwards in a massive spiral formation. Collecting every single atom of matter and shunting it inwards towards the center. Since normal matter can't travel faster than light, it converts to energy and eventually meets up in the center in a now billions of years old supermassive dish that is designed to collect all of the energy in the universe. It ascends to godhood by simply containing all of the energy in the universe. Its power is not infinite, but it sure seems like it.

Though that's long after the point of which DLL will be fighting him.