Top 10 Fictional Characters that are Smart but Completely Devoid of Common Sense

The Top Ten
1 Dr. Heinz Doofenshmirtz (Phineas & Ferb) Dr. Heinz Doofenshmirtz is a fictional character and the main antagonist from the animated television show Phineas and Ferb. He was created by Dan Povenmire and Jeff "Swampy" Marsh, and is voiced by Povenmire.

Someone once told him he needed to have more of a green thumb, so he took it literally and poured a great big can of ACTUAL GREEN PAINT all over his entire body, clothes and all...except that because of the way he was holding the bucket when he dumped it, literally every part of him EXCEPT for his thumbs was covered with the paint

2 Zim (Invader Zim) Zim is the titular protagonist and anti-hero of the American animated series Invader Zim, created by Jhonen Vasquez for Nickelodeon.
3 Dr. Eggman (Sonic the Hedgehog) Doctor Ivo "Eggman" Robotnik is a fictional video game character and the main antagonist of the Sonic the Hedgehog series, created by Sega.
4 Wallace (Wallace & Gromit)
5 Ren Hoëk (The Ren & Stimpy Show)

This guy is a psycho!

6 Timmy Turner (The Fairly OddParents) Timothy "Timmy" Tiberius Turner is a ten-year old boy who is a fictional character and the main protagonist of the American animated series The Fairly OddParents created by Butch Hartman for Nickelodeon.
7 The Riddler (Batman: Arkham Asylum) The Riddler is a fictional supervillain appearing in American comic books published by DC Comics, commonly as an adversary of the superhero Batman.
8 Rick Sanchez (Rick and Morty) Rick Sanchez is a fictional character from the American animated television series Rick and Morty, aired on Adult Swim.
9 Mr. Garrison (South Park) Herbert Garrison is a recurring character in the American animated television series South Park. He is voiced by Trey Parker.
10 Mike Schmidt (Five Nights at Freddy's) Mike Schmidt is the main protagonist of Five Nights at Freddy's. He is a security guard employed by Freddy Fazbear's Pizza, working on a 7-night shift from midnight to 6 AM, until he was eventually fired. The game is played in the first-person perspective, through Mike's eyes.
The Contenders
11 Jimmy Neutron - Jimmy Neutron James "Jimmy" Isaac Neutron is a fictional character and the main protagonist of the Jimmy Neutron franchise . He is most notably the main protagonist of the 2001 American 3D computer-animated comic science fiction film Jimmy Neutron: Boy Genius and the main protagonist of the American computer animated television series The Adventures of Jimmy Neutron: Boy Genius created by John A. Davis.
12 Ravi (Bunk'd)

He seems a bit dumber in Season 3 than the previous seasons. On the first episode of Season 3, he tried to pick up dirt, but was completely oblivious to the fact that there were fire ants on it. And in the lobster episode when Destiny and Mateo replaced his real lobsters with fake lobsters, he read the "Made In China" label on one of those lobsters and took a long time to realize that they were toys. He was like "Made in China? I thought these were made in Maine! ". I laughed so hard.

13 Di Lung (Courage The Cowardly Dog)
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