The Pre. The Myth. The Legend: Unicorn Pre. Unicorn Pre is the glitter-infused pre-workout formula, from the makers of Unicorn Energy and Unicorn Abs. MYTHICAL POWER IN THE GYM. Unicorn Pre is formulated to give you that MYTHICAL boosts the gym, on the court - or wherever you need energy the most. PROVEN INGREDIENTS. Beta-Alanine, Taurine, Betaine Anhydrous, Caffeine, and Alpha Yohimbine join forces with our trademarked ingredients OXYGold and AMPiberry for sparkling results.