A theme of Freak the Mighty is courage comes in all sizes!
Freak had courage when he squirted Killer Kane in the eyes with his burning chemical mixture that would "burn his eyes out."
I can relate to this theme because everyone has had to have courage sometime in their life. My story of when I had courage was when my grandma's blood sugars dropped so low she was at risk of dying. I had to help get her her glucose and monitor working then my mom got her to the hospital.