The correct answer is letter D. Dr. Bender is the name of the evil dentist in the animated television series entitled The Fairly OddParents. The series was created by Butch Hartman and was shown on Nickelodeon since it premiered on March 30, 2001 until 2016. The series transferred to Nicktoons, a television channel also owned by Nickelodeon starting in 2017. The Fairly OddParents revolves around the story of Timmy Turner and his fairy godparents Cosmo and Wanda.
Aside from these three, some of the characters appearing in the series are the following: Vicky, Poof, Sparky, Chloe Carmichael, Chester McBadbat, Jorge Von Strangle, Tootie and of course, Doctor Bender, the evil dentist who has an obsession with perfect teetch and who is also one of the antagonists in the series.