Big Bang Theory The Main Casts’ Age Height TheThingsJonny Gale tallness is nearly 5 feet 5 inches. Johnny is at a medium height. While some might think of him not to be remarkably vertically gifted, his prowess is limitless. Irrespective of Johnny's vertical dimension, he is admired within the entertainment world for his acting abilities. He has showcased time and again that one's stature doesn't dictate success when it comes to achieving success.