The Fearless Trailblazer. Aries, the first sign of the zodiac, is synonymous with boldness, passion, and a relentless drive to lead. Ruled by Mars, the planet of action, Aries individuals are natural-born leaders—fearless, ambitious, and always ready to take on the next challenge. With their dynamic energy and adventurous spirit, Aries are constantly pushing boundaries and striving for greatness.