Bruno Mars is a superstar who named himself after a planet, but, in spite of this, the singer is remarkably down-to-earth. He started off his career as an Elvis impersonator and is now becoming one of the biggest chart-toppers of all time. Mars' journey to fame has been marked with highs and lows. While his laid-back demeanor doesn't hint at his troubles, Mars has had more than his fair share of hardships. Think you know everything there is to know about this icon? Think again.