Dr. Gevaarlijk

Dr. Gevaarlijk was a minor villain in Phineas and Ferb, only appearing in the episode Oil on Candace.

Description
She was a small teacher who taught at Evil Science 101. She had previously taught Dr. Heinz Doofenshmirtz, she hated him, of course. Despite this, he tried to impress her with his countless inators. This doesn't win her over, however. When she was about to leave, he later tries to show him that he's truly evil by presenting her Perry the Platypus. Unfortunately, he reverted back into his "mindless pet form." Doof then confesses that everything was a complete failure. Gevaarlijk seemed to reassure him saying that he could try being a bit evil everyday. He is then touched, however she also states that he couldn't even do that right, and that he was an absolute failure. She then furiously leaves.

Trivia

 * Despite Gevaarlijk declaring Doofenshmirtz to be a total failure, there were a few times when Doofenshmirtz actually succeeded in his schemes, such as moving the Earth away from the Sun to an early autumn in Phineas and Ferb Save Summer, and when he got elected as the First Tri-Governor of the Tri-State Area in Last Day of Summer. This may indicate that Gevaarlijk may be wrong about him.