One in a Million Dalek

The One in a Million Dalek was a rebel Dalek on Skaro. Through an accident in its manufacture, it had human-like qualities; it could question why they obeyed orders and could appreciate beauty. It collected flowers in its quarters, prevented the destruction of flowers and decorated itself and its followers in flowers. The Emperor confronted the One in a Million Dalek and pointed out that the flowers it wore were dying, proving that the strength of beauty did not last. It then had the Dalek exterminated, decreeing that beauty was for human beings and human beings were to be destroyed. (TV21: Shadow of Humanity)