Krulik is the author and creator of several book series, beginning with Katie Kazoo, Switcheroo in 2002.

[2] In July 2008, Grosset and Dunlap (a division of Penguin Young Readers) launched the George Brown, Class Clown series, a spin-off of Katie Kazoo, with the book Super Burp.

Along the way Princess Pulverizer meets up with a dragon who uses his fire to make grilled cheese, and a timid knight-in-training who has been nicknamed Lucas the Lily-Livered.

[7][8][9][10] Nancy Krulik graduated with a degree in journalism from Temple University in Philadelphia, and currently lives in Manhattan with her husband, composer Daniel Burwasser and their rescue Lhasa apso.

Her daughter Amanda is a writer and teacher in Northern California, and her son, Ian is a musician and voice actor in Los Angeles.