Dexter Time For Science
The original Dexter
Fun fact: Dexter was voiced by Christine Cavanaugh, who also lent her talents to The Rugrats (Chuckie) and Babe (that'll do, Pig. That'll do.)
Ten years before there was Dexter the serial killer, there was a completely different Dexter. While Dexter the boy genius did do work in a lab like Dexter the blood spatter analyst, the boy genius wasn't killing people in his spare time. Or at least, we don't think he was. Then again, that might make some excellent fanfic.
Dexter points to his watch because it's TIME FOR SCIENCE on this navy, 100% cotton t-shirt.