Jimmy Gibbler is Kimmy Gibbler's younger brother (in Fuller House). He was looking for her at the Tanner household when he came across Stephanie playing a song on her guitar. Jimmy liked the song and sat down to visit with her. They kissed, and then Kimmy saw them. Stephanie was stunned when Jimmy did the Gibbler gallops with Kimmy, and that is when Kimmy revealed that Jimmy was her younger brother. Stephanie was shocked and horrified that she had kissed a Gibbler.