Also, anything that can be used as an element of drama can exist in professional wrestling stories: romantic relationships (including love triangles and marriage), racism, classism, nepotism, favoritism, corporate corruption, family bonds, personal histories, grudges, theft, cheating, assault, betrayal, bribery, seduction, stalking, confidence tricks, extortion, blackmail, substance abuse, self-doubt, self-sacrifice; even kidnapping, sexual fetishism, necrophilia, misogyny, rape and death have been portrayed in wrestling. Some promotions have included supernatural elements such as magic, curses, the undead and Satanic imagery (most notably The Undertaker and his Ministry of Darkness, a stable that regularly performed evil rituals and human sacrifice in Satanic-like worship of a hidden power figure). Celebrities would also be involved in storylines.