Excellent
I like how you incorporate all the little nuances of DBZ without going overboard with them. I think the art is BEAUTIFUL, and the animation is absolutely top notch stuff. I also appreciate how you keep the characters respective mannerisms seperate. Everytime I see Mario or Luigi have DIALOGUE in other flashes, I sigh in disappointment. Here, Mario, Luigi, and even the Wario Bros. are EXPRESSIVE, not talkative, and Sonic and Shadow are polar opposites, which I consider to be true. I'd love to see more Sonic characters worked into future episodes. Perhaps Amy Rose has some plans of her own for the Chaos Emeralds, hmm? But I digress.
I really, really look forward to the next episode with bated breath.