Graveler from ruby and sapphire can only evolve if you trade it over the game boy advance game link cable.
Gravler evolves in a trade.
You have to trade Gravler to an other game for it to evolve.
He evolves by trading.
to evolve gravler you have to trade it
Gravler then into golomn if gravler is traded
Graveler must be traded for it to evolve into Golem
graveler doesnt evolve at a level, you evolve it by trading.
it doesnt evlove by level. you need to trade it and it will evlove for them, then they trade it back.
you need to trade it to a friend with a link cord.
you catch geodude or a gravler and level it up intil it evolves. geodude evelves into gravler gravler evolves into golem
You'll need to Link Trade it. I recommend you to trade for it.
You have to trade it to another player for it to evolve.