At first glance, everything looks like gibberish, but a couple of the words at the bottom look very familiar.

Reading the letters in each word backwards, the bottom line reads: FROM THE DESK OF STEPHEN P. HINCKS

Applying this to the words at the top generates,

EVIL STAR DAD: "No, I AM..." UHHHH, LINE?

A villainous dad from the stars says a classic (and often misquoted) line, but what is the rest of this rat dad's line?

Darth Vader's famous line is: "No, I am your father."

Making the solution: "On, I ma RUOY REHTAF."