are you kidding me? tonz of his opponents could. freeza didnt need oxygen and flew through space with ease. most of the later villians could move planets. if flying so fast you went back through time was even logical, goku could do it too. however, flying super fast dosnt make you go back through time, and as such, that didnt happen with goku. goku can use instant transmission which is much faster thatn light. in fact...its instantanious...hence the name. picollo dosnt eat food. hmm, what else. in the after life, goku fought tonz of villians that im pretty sure dont need food water or air since they are dead. and it seems that the creaters wernt very smart with superman. he can fly through the core of a star unharmed, yet he gets hurt when punched by villians? he can fly faster than light, yet when his girlfriend was in trouble, he was barely able to come save her in time? the creaters of superman said a bunch of junk to make him seem cool, yet most of the time, he did not have these amazing powers of which you speek