In 'The Proud Family Movie,' the villainous scientist is Dr. Carver.
Dr. Carver becomes interested in Oscar Proud’s snack formula after Oscar creates a serum that makes Proud Snacks expand dramatically. Carver wants the formula because he has been trying to stabilize an army of humanoid peanut creations. He invites the Proud family to Legume Island, presenting himself as a scientist with a remarkable peanut-based project.
The story adds a science-fiction twist: the apparent villain is eventually revealed to be a peanut clone of the real Dr. Carver. The original Carver created the G-nomes and made the clone to continue his research, but the clone became evil after exposure to sunlight and took control of the island. It then creates peanut soldiers and plans to conquer the world.
That distinction can make the plot sound as if there are two answers, but the character is consistently identified by the name Dr. Carver, and that is the fair quiz answer. The villain is not Dr. Claw, Dr. Evil, or Dr. Doofenshmirtz; those names belong to characters from unrelated franchises.