Deku "Smash!!" Sounds like something the Hulk might say, but in this case it's your friend Izuku Midoriya and the word on this beautiful and uplifting My Hero Academia Deku Smash!! Patch. Add it to your wardrobe and tell the world My Hero Academia is your HeroAca! The patch measures about 3 3/4-inches tall x 2 3/4-inches wide.