Bismuth or Bozz, that is how he likes to be referred to. he was born in the blue diamond court. he was one of the blacksmith of homeworld, but he was specially assigned to make weapons to a Holly Blue Agate and her gems she was training. As, all the agates, this one try to be terrific and trying to terrified Bozz. but, as he was so arrogant and had pride he didn't felt terrified by Agate. instead he gets interested in her. because, this Agate compliments him how good he was with his work in creating weapons. with all that, he try to know more of Agate and they felt for each other. but, this kind of love wasn't allowed by the diamonds. so, Agate try to hide that love, but Bozz with his arrogant pride he decided to left the diamonds authority. when the crystal gems start the revelation on earth in blue diamond court. Bozz find Agate to run and be happy and they became rebels for the diamonds. but that didn't matter, they where leaving happily on earth.