No, she isn't. Happy Frog is a part of another group called Mediocre Melodies. The Rockstar animatronics feature all the original four animatronics from the first game and the Marionette. While the Mediocre Melodies focus more on the lesser-known animatronics in the series that don't have their own established brand like Freddy, Bonnie, Chica, and Foxy.