I <3 SMB Z ^^
The small things that I didnt like in this toon was that the humour was kinda boring some places (though good in other places), and the professors voice makes me wanna go in there and punch him in the face but I wouldnt recommend changing that since it would probably make SMB Z weird.
BUT!!!
Your skillz in making sprite battles rox! ^^ Ohyeah! Keep up the good work!