Been rewatching the series and noticed something.

On how much tht same characters have been downgraded yamcha was a challenge for goku for some reason especially with the wolf fang fist.

Tein been downgraded so much with him being the first for a lot of ki techniques like the solar flare. Now he doesn't do that much at all taking a seat back for vageta.

Even his friend that looked like a challenge is now never seen that much in dragonball z after sayins came he was just gone.

I fell the only usefull person in dragonball to dragonball z was krillian.