The combines doesn't own 1 galaxy or 1 universe they conquered over 400 universes and the army that took over earth was just a tiny scout legion and humanity with there technology were already severely struggling against the combine remember its literally just a tiny fraction of the combine army
Maybe when the combine trapped the gman in the vault they took his DNA and used it to clone the gman but in a toilet and sent him to fight in the skibidi verse
ı have a combine-cameraman theory. theory:Cameramen's weapons, colors, vehicles, everything belongs to Combine. And I don't think they are independent. If they were independent, we would have seen their flags. When they teleport apart, a black smoke appears and this could be Combine's dark energy. Dafuqboom is already a big Half Life fan. Who knows? Maybe the cameramen are puppets. extra: Dafuqboom's color, behavior and features are the same as Gman. Dafuqboom and Gman can be the same person. Dafuqboom talks like Gman anyway. I apologize if there are any spelling errors. I am using translation.