Modern Scientist 1.2+The adorable waitress

One of my friends wanted me to draw the other guys from this hilarous serie so it was a good opportunity to explore some new technics in color so that's why I'v done these character design differently 
Could recognize them haha? 
Penny (Oops) was really hard to charadesign (I'm not so proud of it) because the actress is really beautiful and she's got a symetric face and I think, people who are too symetric are really hard to the way I hope you'll will enjoy it ;)