Sebastian St. Clair is a minor character in BoJack Horseman.
He is a former department store chain owner and celebrity who runs several charities in Cordovia. He is constantly seen doing volunteer work with the Cordovian people. One of the recurring themes with him is that he wants Diane to document his goodwill in a book like she wrote for Bojack Horseman. Despite his superficially good actions, it becomes obvious to Diane Nguyen that he is in Cordovia for the positive publicity and to boost his image in the United States.