Mark-Paul Gosselaar stars as Sir in the NBC drama "Found."

Gosselaar made his television debut as Zack Morris in the popular teen sitcom "Saved by the Bell." 

Since then, he has had an extensive career starring in a number of series, including "The Passage," "Pitch," "Commander in Chief," the critically acclaimed drama "NYPD Blue," "Raising the Bar," "Franklin & Bash" and the "black-ish" spin-off "mixed-ish."