O'HAI!
THE FOLLOWING REVIEW IS INTENDED AS ADVICE! NOT INSULT! to not take it as INSULT, please consider it friendly assistance :D
your mad scientist doesnt sound very mad. it sounds like you made a script that IMPLIES he should have the behaviour and pallette of a MAD scientist... however he held no direct mental ilness qualities that would suggest he was "mad".
may i suggest you give the scientist some kind of obsessive quality, like the jokers lip smacking... maybe he could yell or scream randomly... he should twitter and rant about unneccesary things... he could just generally sound incredibly unusual or unique....something that would differ from the norm instead of sounding a little bit like kermit the frog :D
PERFORMANCE- to increase your vocal energy i suggest keeping out of monotone. it is a little droll in places, and you cant really rely on the script to keep it interesting. try making the voice consistent and fluent, but have inflections and tweaked pitches here and there to emphasise or express yourself more.
your script told a story, and i did not judge this as though it was a comedy, because to be honest it wasnt very funny. writing is a different matter alltogether. i just advise watching lots of comedy to get a feel of its intention and structure.
MICROSOFT SAM UMmmmmmm........microsoft sam is digital voice imitation software... it is not an effect, its a sample. you can use musical samples, but none that simulate or are recognised as someone elses voice.. whether it be robot or alien. all vocals must be your own performance.
i think in terms of being different or unusual, this submission was not really anything unique...
HOWEVER!!!!!
i think this is a blatant display of the talents you can build. you have the ability to become a very good voice actor! it is simply a case of REALLY getting into character, really enjoying and going for it... doing more than saying lines... actually being the character... i personally flail my arms and pull jim carrey rubber faces... most unnatractive lol, but it is much more expressive.
you have so much potential, you will be good, if you keep in practice... if you submit to the future voice acting competitions i can guaruntee you would move higher each time so long as you practiced and thought hard about your work.
keep up your efforts, because they will really go somewhere if you are eager enough! good work, i unerstand it took you a long time to work with, well done for all the effort. i look forward to your future efforts :D GOOD LUCK IN THE COMPETITION!!!!