Alrighty, let's see...
I'm fond of the art style you have, and I enjoyed the jokes. What can be improved on is the artwork and the quality of the voice acting (I can agree with NightTorch on Roll's voice). Of course, these things can be improved on as long as you practice, discover your own flairs, and continue to develop animations! :]
The drawing style is terrible, but the plot is absolutely hilarious.
Hmm that professors hair seen from the back looks just like a back! Heh, pretty entertaining plot, simple and short, one thing I was a bit annoyed by was that proffs voice, felt a bit too artificually squeaky somehow - maybe try a lower quavering old-dude voice instead? Keep it going!
The humor was good, and I felt it was good for first animation. your voice acting needs to be improve and the art as well, but overall it was good.
good luck with future cartoons and just keep trying and getting better!!!!!!
First ever cartoon huh? Welcome to animation. Right then, review.
Pros: Humor was pretty good. Not the overly derp kind of humor I see sometimes (and dislike), I liked it. Nice to see you know mega man, using Magnet man as a proper cameo (be surprised how many wouldn't see why, say, Shademan isn't supposed to be active at the same time as Shadowman).
Cons: Art could use a significant amount of polishing. Voice acting could stand to be improved (Roll sounded like was recorded somewhere with an echo for example, was also difficult to understand Wily at times).
Other: I won't say this was among the best I've seen, but given it's your first cartoon, I AM fairly impressed. Keep at it. You'll get better with practice. Some of my favorite megaman toons here has subpar art style, so it's the overall result that matters. Nice job.
Thanks a lot for the critique, and I honestly agree with you completely. I'll try to get better voices for future cartoons as well as improve my art style and stay consistent.