Blue Diamond is a major antagonist of the Cartoon Network series Steven Universe.
She is voiced by Lisa Hannigan.
Blue Diamond is one of the Gem Matriarchs on Gem Homeworld and a member of the Great Diamond Authority ruling over Homeworld. She was apparently responsible for overseeing the first attempted colonization on Earth, and later, the attempts to quell the rebellion of the Crystal Gems.
The K Team Storyline[]
LOTM: The New Multi-Universal War[]
Fire Rebellion Storyline[]
Blue Diamond and the rest of the Great Diamond Authority, after White Diamond lightens up and reforms, become members of the Multi-Universal United Republic.
