An A+ Effort
I hope you got a A on this because this is one hilarious piece with great optimization, timing, presentation, and humor.
The graphics fit the style you were aiming for and while they weren't jawdropping, they added rather than detracted from the humor. I'm not going to spoil the cameos for those who haven't seen the film, but they are hilarious. Instead of making the usual riffs at DBZ you had your own unique take which makes it funny. And I loved the 3D esque opening and the outrageous ending.
My primary complaint...you didn't have a replay button! I know that's hard to add after you've done all the work, but please, I want to play it again and again!