The Horoscopes are twelve Zodiarts based on the constellations of the Western Astrological Zodiac and the main antagonists of Kamen Rider Fourze. They are Zodiarts that are completely evolved from their human selves while keeping their human bodies, unlike Last One Zodiarts.
Initially only having four members at the beginning of the series, the Horoscopes would distribute Zodiarts switches to students of Amanogawa High School in order to build up their membership to twelve for their master plan.
Once all twelve Horoscopes are gathered, the Sagittarius Zodiarts will instigate a mysterious event called the Day of Awakening where all twelve Horoscopes Switches will be used to reach the Presenter, a mysterious sentient will of the universe, by conjuring the Dark Nebula, in the process sucking in most of Japan through its gravitational pull.
Horoscopes Zodiarts possess use their own variants of Zodiarts Switches to transform. These switches differ from regular Zodiarts Switches as they are red and gold in color, are marked with the astrology sign of their respective Zodiarts, and are oblong-shaped.
A Horoscopes' most powerful ability is to undergo a "Supernova", a transformation that will allow them to either assume a more powerful form or gain a new technique. However, the Supernova can only be used for a limited period of time as using it for too long will cause the Zodiarts to be destroyed.
- Mitsuaki Gamou/Sagittarius Zodiarts
- Kuniteru Emoto/Virgo Zodiarts
- Kouhei Hayami/Libra Zodiarts
- Kou Tatsugami/Leo Zodiarts
- Sarina Sonoda/Scorpion Zodiarts
- Natsuji Kijima/Cancer Zodiarts
- Tatsumori Yamada/Aries Zodiarts
- Tojiro Goto/Capricorn Zodiarts
- Erin Suda/Aquarius Zodiarts
- Yuta Sugiura/Taurus Zodiarts
- Dark Yuki/Gemini Zodiarts
- Ran Kuroki/Pisces Zodiarts