Bou: Bou is Yu-Baaba’s baby. Chihiro discovers him sleeping beneath a bunch of pillows in his room. At first he is very afraid of the outside and a germ-o-phobe but while on his adventure with Chihiro that all changes and at the end he stands up to his mom. When Zeniiba appears he is changed into a rat and Chihiro takes him along with her when she travels to Zeniiba’s house.