Beaker: Muppet geek
Probably the second geekiest Muppet, after Dr Bunsen Honeydew. Beaker may not get to run the experiments, but he generally does get to take part most of the time.
But when it comes to nerdy haircuts, he really can't be beaten. His fabulous shock of red hair sets him apart in the world of geekery. He looks like he's had a hair transplant from one of those little troll dolls that were popular a number of years ago.