Laplace no Ma

ラプラスの魔, Laplace's Demon
Laplace no Ma is Shirosaki in the appearance of a white rabbit in a tuxedo and a top hat with human mannerisms. He is neither sinister nor kind and has a tendency to speak in riddles. His brief appearances in the NField leave the Rozen Maiden with nothing more than poetic and seemingly nonsensical advice. Despite the fact that he was seen supporting Barasuishou and later Kirakishou Shirosakis true motives remain a mystery. His rabbit form is named for Laplaces demon. Featured in the manga and the second season of the anime. He also appears at the end of the OVA.