Since its creation, Star Trek has grown immensely, with each addition to the largely successful franchise adding more depth to the universe. Gene Roddenberry, the franchise's creator, wanted to craft something special, a utopian vision of the future which stories would act as sci-fi allegory for current issues. To create such a believable world, Roddenberry and his team of writers added a ridiculous amount of depth to their universe. They invented a dizzying array of alien races and cultures, and perhaps most impressively, developed and fleshed out an entire Klingon language.