Simon Cowell is known for his blunt and honest personality on TV, but at home, he’s just “dad” to his son, Eric Cowell. Fans are often curious about the famously tough judge’s life off-camera — especially when it comes to his only child.

Judges Simon Cowell and Howie Mandel use their Golden Buzzers on the first night of competition. America's Got Talent judge Simon Cowell has seen it all, or so you would think. Having judged contestants not only on the NBC series but also on shows such as American Idol,

The two have been at the judging panel together since season 11 of 'America's Got Talent'Howie Mandel and Simon Cowell have been judges on America's Got Talent together since season 11Speaking exclusively with PEOPLE,