Katie Knight is one of the main protagonists of "Big Time Rush". She is Kendall's little sister. She is intelligent, mischievous, and a troublemaker at times. Katie enjoys the guys' adventures. She helps the guys, she is great at poker, and is able to get into Gustavo's head as shown in Big Time Crib. She makes フレンズ with the staff and a lot of the adults, but not so much as to kids around her age.

This little bundle of joy is always there to make life exciting for her brother and his friends.

Katie Knight is portrayed によって actress, シアラ Bravo.
Katie is a classic "little sister". She is smarter...