He sounded like some kind of mad professor.

Science has always been frowned upon as an evil, used by mad professors who seek world domination.

Amkot Groell was a small man, with disheveled white hair that made him look like a mad professor.

However, this freedom also allowed him to turn himself into the very epitome of the mad professor.

A mad professor has developed a virus that kills everyone once released.

That mad professor made her laugh so hard!

It's an eccentric open university, with a curriculum put together by a committee of mad professors.

Loose again, the mad professor was looking for more victims.

A mad professor I used to know.

He reminded her of the mad professor in her comics.