Darwin Watterson
Character Information
Gender: Male
Also known as: Walking Fish, Fish with Legs
Species: Goldfish
Age: 10
Friends: Gumball Watterson, Finn, Jake, Mordecai, Rigby
Enemies: Microsoft Sam
Relatives: Gumball Watterson(Brother)
Occupation: Student
First Appearance: Tourist Trapped
Voice: Kwesi Boakye, Katgirl1000 (formerly in The Challenge)

Darwin Watterson is one of the main characters in The Amazing World of Gumball. He used to be Gumball's pet goldfish, but one day he grew legs, gained the ability to speak, and generally adapt to life outside of water.


Darwin is a goldfish with legs. His goldfish-shaped head takes up his entire body, with his fins and legs hanging down from it. He has retained his goldfish tail and fins, the latter of which he now uses as arms and hands. His legs are much longer than his body, ending with plain feet matching the color and texture of the rest of his body. Usually, though, he covers them with green and white sneakers. A common misconception in Season One was that he also wore a black shirt, but that was actually just a shadow cast by his big head.


Due to his sudden entrance into the world, his perspective of it is somewhat skewed and naive. He has trouble understanding many situations. Often people have to point out his misconceptions and faults, such as the time he didn't know the definition of dates and when he used a DVD as a pizza cutter. However, in season two, Darwin  became less naive and more intelligent like his sister Anais. In season three and four, Darwin had gotten a bit stronger and able to speak his mind more officially not like in the episode The Words. He can also be sarcastic and speak most likely ironic towards Gumball. 


  • From Season 2, Another Voice Actor/Actress will take over to voice Darwin due to Phineas1and1Ferb's retirement of voice acting.
  • He Can Time Travel As Shown In Time Traveler's
  • Darwin was voiced by Katgirl1000 in the episode The Challenge.
  • Darwin is a vegan.