Game figures usually don’t have bodies. The clothes are the body. This is to keep the poly count down.
The issue will really be, genesis wont really work in a game, at least none of the weight mapping will. And you do need the license to use DAZ figures in games. Another thing is DAZ figures are design for rendering, meaning they are fairly high in polies for a game.
That said you can remodel you figure by decimating to drop the poly count. Add the clothes and delete the polies that don’t show. But Hex doesn’t know rigging, you will probably lose it.
What game engine are you using and how are you getting genesis into it?
If you are exporting from Hex you will loose the rigging and will have to rerig the figure for the game.