Well I thought that the crossover was amazing truely amazing. The reason why was because not only was Ben 10 in it but the main villan of the episode Alpha was really worthy of fighting both Rex and Ben at the smae time. I thought it really cool how Ceasar was the creator of Alpha and how Alpha wen to the bug jar to get the most nanites.Another part that was really cool was when Alpha merged the Omega and became a huge monster trying to distroy the Earth. One thing that I found stange was that Ben didn't go ultimate in this episode. Now I have only one thing that sadened me was that I wanted Rex in the end to be able to absorb Alpha and be able to control it and then get some really cool builds with the color scheme of red. That's basically what I have to say about this episode. Wow.
Here is what alpha looks like. But not in his monster form.