He's a grumpy evil scientist who hates that he's bald. He's trying to make hair lotion every day, but always fails and accidently makes flower lotion instead. The running gag in cartoons is whenever he makes lotion and tries it on his head to see does it work, looks at himself in the mirror and sees that his head is covered in flowers. Then, he starts screaming and pulling flowers out of his head. On some occasions, Boss used to put water on flowers from Dr Egghead's head, and Dr Egghead punched him to the head and called him an idiot. Because he couldn't make a good lotion, he often encouraged Trolls to capture Vicky, Cuddly, Happy Dog and Kimbo and bring them to him so he can cut their hair and make himself a wig. His main goal is to cut Vicky's hair, because he wants to be blondie, like his favorite Rock Star.