Whilst I have built Dr Z up on my own, I suppose a good representation of him would be Dr Evil from Austin Powers, only again, not as eccentric or over the top. Just in the sense that he is a comedy Super Villain. I will post a video of him regardless, so you can understand a small bit of a villain that inspired me.
The second is for Dr Z's two henchmen. First you should know, they are named Fidel and Benito, both of which are named after dictators, Fidel Castro and Benito Mussolini. This is just a fun reference. They are in fact just two bumbling idiots, that are completely useless at anything. Fidel is the smarter of the two however, while Benito just doesn't really know what is going on most of the time.
Benito himself does have some inspiration drawn from the character of Kevin Malone, from the US version of The Office. I shall show him here:
The rest of the characters I have created haven't really got an inspiration as such, I didn't loosely base them off of anyone, but these were just a few examples of characters I have based and got inspiration from other shows off.