I was recently re-watching DBZ dub episode 171 about how Gohan got his name, tree he crashed through as a kid etc. And a thought came to mind.
Why didn't we ever see Grandpa Gohan in DBZ? I mean there were plenty of scenarios where goku could have found him in other world or the Z-fighters could have revived him with the Dragon Balls.
And in addition to that IIRC, They wished for all the humans killed by the saiyan invasion to be revived, wouldn't that also account Grandpa Gohan since he was accidentally killed by Goku in his oozaru form?