Great idea for a quiz, but it's lacking in consistency. For example, it accepts Marcus without the last name, but not Dale or Mandy. All characters should be accepted by first name only. All characters except Coopers should be accepted by last name only.
Wow...that was fast! It was much better this time, but I would still allow last names such as Ballard, Linkletter and Sturgis (without Dr), nguyen (with some spelling variations), Swanson, etc. I would also allow other type ins, such as Page instead of Paige, Markus instead of Marcus, Professor Linkletter, Professor Sturgis, etc. Just my suggestions to make it more about whether or not you know the character instead of the right combination and spelling of names. Awesome quiz!