Johnny is a main character with a multitude of lines! Johnny is a character who has seen a lot of loss in his life, he is always sort of detached from reality in a sense, except for in his childhood. Johnny also appears at an array of ages, from young childhood all the way through late adulthood. The audition requirements will be different for each age.
This character also requires an audition monologue which can be found here: http://www.ace-your-audition.com/support-files/yale.pdf