>>57072964Because best rock type coming through.
>Available early game. Gen 1/2 old dv system favours pokemon used as early as you can get them>Actually learns a rock move at a useful level, great for ohko every trainers bird and bug>Naturally learns earthquake at a prime LVL 36>Self destruct and explosion trump cardEven graveller holds its own weight if you can't trade, rhyhorn comes in game so late being under leveled, no good moves, and under leveled to the rest of your team up untill that point.