Actually Cat is the bad guy, she is a 68 year old asian woamn who was trapped in a six year olds body when aliens abducted her!
No, ok how about Mia who became a super intelligent dog when they gave her nanites and now she runs her crime ring of other super intelligent dogs from right under Max's nose? don't like that either huh?
Ok, this is what I really came up with, Its...hey is that a bunny? Gotta go!