We decided to put together two of the sketches to gain the most favourable design for the Scientist. I applied the head of one of the sketches to the body of another using Photoshop.
As a group we still feel that the eyes of this character are too stylized, therefore they need to be made smaller. As a result, I drew the character out again after applying this effect in photoshop as a tester.
So heres the final sketch of the scientist with smaller eyes:
Overall, he looks a lot more mature, gives a very serious "English" feel and portrays the wisdom that a Scientist would have.