Aazealh said:A lot of people have over the years. It wouldn't be hugely surprising if Gouki's appearance had been inspired by Zodd when he was originally created.
Agreed, and it's more than his appearance. Aspects of Gouki/Akuma's "story" are very similar to Zodd's (warrior who sought strength became a demon). Akuma/Ryu's rivalry isn't dissimilar from Zodd/Guts. Which means Evil Ryu is Guts as an apostle