Metallix's cold heart and ruthless nature are exacerbated to the point where he becomes a totally merciless killing machine. He shows no mercy to any creature he encounters and will take lives without a second thought to get what he wants. According to Sonic, Metallix bears a lust for power and destruction, shown by his desire to achieve ultimate power by collecting the Chaos Emeralds. In his pursuit, he is willing to destroy anyone and anything that gets in his way.