Zosite and Queen Beryl in “Unfinished Business”

These Rainbow Crystals, is it true that our comrades the Seven Shadows are imprisoned inside of them?

Unfortunately yes, Zosite. The Seven Shadows were my finest warriors in the war against Queen Serenity. But she trapped them inside the white-hot light of the Silver Crystal, then hurled them into space. But somehow the Crystal shattered into the seven Rainbow Crystals, a Shadow Warrior locked in each piece. They disappeared into the Earth's atmosphere. Losing them remains a great bitterness to me. Even now, a thousand years later. I want them free!