Red: Rolls down slopes to move. It rolls over any obstacle without slowing or changing its direction.Yellow: Often seen rolling down mountain trails. Obstacles are just things to roll straight over, not avoid.Gold: With a free and uncaring nature, it doesn't mind if pieces break off while it rolls down mountains.
Prof. Lotus' Notes: Graveler's Japanese name is ゴローン (Goron), and avid Legend of Zelda fans would find that the rock species share the same name. This is because this is a play on words, ゴロゴローン (Goro Goron) is the onomatopoeia of rocks falling, a trait both of them share. In the original Red and Blue version of the game, the sprite incorrectly had 4 limbs visible instead of 6. This was fixed in the Yellow version.