The inspiring rags-to-riches career of 'Shark Tank' judge and internet-security guru Robert Herjavec

Robert Herjavec is best known as one of the five investors on ABC's "Shark Tank." But he has quite a backstory.

Not only is he a millionaire thanks to some successful companies he has founded, he also maintains a fun social life with truly interesting hobbies.

Here are all the trials and tribulations that made him the brilliant and successful shark he is today.