- “Ah hah hah hah! They called me mad at the university...and they were right!”
- ―Crazy Scientist
The Crazy Scientist has messy grey hair, similar to Dr. Inferno and Dr. D. Zaster from the Agents line, a white lab coat with a few lime green spills on it, and black legs with a white hip piece. He comes with a new part, which is a conical flask that is clear with green mixed into the lower section.
- At two per box, he was the rarest minifigure in Series 4.
- His hair is made out of a type of rubber, similar to the Punk Rocker's hair.
- His "monster" is also included in the same series, the Monster, based off Frankenstein's monster.