Where was Hercule when Vegeta and Nappa attacked the Earth?
Where's your gawd now, Fernando?!?
He wasn't champion at the time, I assume he was fighting people to get to his champion title
Being beat by Krillin because he went super saiyan,
Hercule wasn't introduced till a later season.
they still did not make hercule so he had no role to play when the saiyans came.