This was quite nice, but it could have been better. I just thought it was too long. There was a bit too much buildup. I still appreciate the animation. You should have seen the Invisible Woman in this one outfit. I like the idea of these characters fighting the superheroes.
Some of the designs are a bit weird. It still mostly works. The voices seem appropriate for the characters. It's great to see Marvel and DC superheroes together. Well, they're not technically together.