Here is the list of friends and enemies of Aries. Aries' best friends are Aries, Leo, Libra, Sagittarius, Aquarius, and Gemini. The enemies of Aries are Cancer and Scorpio. Aries is a cardinal sign ruled by the emotional planet Mars. Along with many other divine influences, this combination creates a powerful and vital energy in your life. Aries people are always ready to fight and have a competitive spirit and they rarely back down from a fight, be it friendship or any other fight.