Im crossplaying as a guy, so even if I tried as hard as I could to work out, It would never look right. Im sorry, but I forgot to mention that his muscles aren't actually exposed. They are covered by his costume, but since its really tight, the muscles bulge out. Thank you for your help anyway. If you know the costume, it's Chaos from ff7 DoC.
Sakuracon 2012- Tira (Soul Calibur 5), Katherine (Catherine)
Acen 2012- The Boss (Metal Gear Solid 3)