In playing Tag team titans how do you break boxes

Switch to Raven. Go near the box you want to break and press x. You may need to jump if the box is up high. Once you do that, the box should turn black and you'll be able to move it where ever you want with the arrow keys. To break the boxes they must be high in the air, about 3 boxes high, and then you can press x again to release it. Doing this can KO enemies too, if dropped right above them.