Coming to popularity through his family's YouTube channel called SHAYTARDS, Gavin Butler, commonly known as SonTard, is the oldest child among five children of Butler family from California, United States. The good brother with kind heart to all of his younger siblings also found a passion for dancing like his father, Shay Carl, therefore, he is usually seen showing his moves on camera.
He has been involved in various sports like soccer and martial arts and interested in reading diversified books. In addition, he participated in the Scouts following his father's footsteps.
His parents are Shay Carl, a vlogger and YouTube personality, and Colette Butler. He has two younger sister, Emmi (born 2007) and Avia (born 2005), and two younger brother, Brock (born 2010) and Daxton (born 2013).