Yellow Diamond, or Yellow for short, is a Homeworld Gem and a member of the Great Diamond Authority that formerly ruled over the Gem race. In particular, she commanded her now-disbanded military and oversaw Gem production on her colonies. She was first shown in the extended theme song before making her official debut in "Message Received". As a result of Era 3, Yellow now works to repair Gems she had previously shattered in her Cluster experiments and wishes to use her powers to help other…