I combined my previously sculpted head with an edited version of the body builder's mesh. The body was modified so the simulated clothing in Marvelous Designer would take to the mesh better. The clothing was cleaned up in ZBrush. Shoes were borrowed from an online store.
I brought the model into Maya to assign shaders to different parts of the model (jeans, jacket, etc). From there, I sent the character to Substance Painter where I created my own materials.
I revisited ZBrush to pose the character. After baking all maps in Substance Painter, I brought the maps and the newly posed character into Marmoset Toolbag for rendering. Color corrected in Photoshop.
Programs Used: ZBrush, Marvelous Designer, Maya, Substance Painter, Marmoset Toolbag, Photoshop