Boost Crystals were large shards of violet crystal that were used by the Maltusians offshoot race known as the Zamarons. These female cousins of the Guardians of the Universe had tapped into the violet energy of love in the Emotional Spectrum making them as powerful as their Oan kin. At some point, they created the Boost Crystals which were capable of materializing on the battlefield and projected a powerful shield to Zamaron warriors thus shielding them from harm. So long as the crystal was present, the Zamaron warriors were greatly aided in battle against their enemies through its supporting influence.