Meltrox is a Rock Monster from the Power Miners theme. Meltrox is also known as the red rock monster. He is one of the five Crystal Rock Monsters from the series. Like all Rock Monsters Meltrox is not made from normal minifigure parts.
Meltrox is angry, destructive, full of rage for everyone and everything-and that's when he is in a good mood! He is always the first to want to fight, even when there are crystals nearby for the taking. The Power Miners know when they see Meltrox, they better be ready for action!