In Tekken 4, Roperto has short brown hair. In Tekken 5 he has shaven the back, and the sides of his head leaving only the top untouched.
In Tekken 4 Roperto has white shorts with black lines on the sides, and on the belt area. The shoes match the color-scheme of his pants, with mostly white, and black lines. His boxing gloves are blue.
In Tekken 5, the shorts stay the same, but now it also has a red "Agei" logo on the left side. The shoes stay the same. Boxing gloves are now red.
Intro: Roperto fought Steve Fox in the boxing ring, Steve knocked Roperto out without being hit once.
Marduk's Ending: Roperto is seen fighting another boxer, but Craig Marduk interferes the battle and grabs the boxers from the heads and bumps their heads together, which could mean they're seriously injured.