Cyrus Strange first appears as a hologram at a science fair that Wednesday Addams has entered. He is impressed by her DNA transfer experiment on Fester. Later, he sends a lawyer to The Addams Family Mansion to try to convince them that Wednesday might have been switched at birth. He turns into a rooster. Uncle Fester turned into a squid and stops him before he kills The Addams Family.
He was voiced by Bill Hader.