Riddle me this?
100

This person played the Riddler in the Batman show in 1994

What is Frank Gorshin

200

This person voiced a character in Young Justice and was an actor in Now You See Me.

What is Dave Franco?

300

When is a door not a door?

What is 'When it's ajar?'

400

What is the first written riddle?

What is 'There is a house. One enters it blind and comes out seeing. What is it?'