The shape people are minor characters in The Amazing World of Gumball. They made their first appearance in "The End." They can be seen standing across the street for a split-second before the bus pulls up, and obscures the audience's view of them. They get a larger role in "The Extras." They reappear in "The Law."
Three of them are a triangle named Ed, a rectangle, and a pentagon. Ed is colored blue, and is the tallest, mainly because of his long legs. The rectangle is colored black, and is the shortest, being only as tall as Banana Joe. He also only has one eye. The pentagon is in the middle, according to height. She, like the rectangle, is also colored black. There are also another blue triangle, two blue pentagons, two blue squares, two orange squares, and two yellow triangles.
- Ed (blue triangle)
- Ed's wife (black pentagon)
- Ed's son (black rectangle)
- Another black pentagon
- Teal square
- Blue square
- Blue pentagon
- Blue triangle
- Yellow triangles
- Orange square
- Green lemniscate
- Pentagon woman and her baby ("The Console")
- "The End": Ed's group is seen on a sidewalk.
- "The Wand": The black rectangle is at Richard's wedding in a flashback.
- "The Ape": The black rectangle is at Nicole's wedding when Miss Simian insults Nicole and Richard in a flashback.
- "The Bumpkin": The pentagon father, an orange square, and a yellow triangle are seen judging a skating contest, in which a green lemniscate is competing.
- "The Extras": Ed's group's first major role. They are seen at a bus stop.
- "The Law": The square baby is with his father, the pentagon father, and gets hit by a can and cries.
- "The Allergy": The yellow triangle and square baby almost get blown away by Darwin's sneeze.
- "The Shell": The black rectangle and black pentagon are seen in the audience watching the school play.
- "The Butterfly": The pentagon father and black pentagon drives by Mr. Robinson. Later, Ed is on the escalator and gets knocked down, and the black pentagon is in a parking lot and also gets knocked down.
- "The Oracle": The black rectangle and black pentagon are one of the many people who want to be the 1,000,000th customer. The Pentagon Guy and Yellow Triangle also walk through the mall.
- "The Spoiler": Ed and the black pentagon are seen in the cinema.
- "The Parking": Ed and the black pentagon are in the cinema.
- "The Wicked": Mrs. Robinson switches the shape baby with the Pepperonis' baby, causing Quattro and the pentagon father to fight. The triangle mother also appears. Later, the black pentagon and black rectangle run from Mrs. Robinson, when she attempts to run people over.
- "The Traitor": Ed and the black pentagon are in the cinema.
- "The Awkwardness": The pentagon father is in the mall.
- "The Misunderstandings": Ed's group is walking on a sidewalk with a map when Gumball bumps into them, he speaks with them in a strange language. Ed gets mad, due to his lack of knowledge about the language. He then comes to the mall to take revenge upon Gumball. However, Richard accidentally hits him with a car.
- "The Blame": The black pentagon, black rectangle, and pentagon dad are at the PTA meeting.
- "The Disaster": The black pentagon is in the mall. Later, the yellow triangle, the pentagon guy, and the square kid appear at the mall.
- "The Rerun": The black pentagon is in a crowd when Anais is thrown. Ed is later walking in the background when Darwin dies.
- "The Slide": Rocky, Gumball, and Darwin run past the triangle mom and square baby.
- "The Console": A pentagon mother with a baby gets knocked out by Gumball, Darwin, and Anais in the park.
- "The Catfish": The black pentagon is at the mall.
- "The Stars": Ed and the black pentagon watch ManMan in the cinema. Later, the black pentagon is at the mall when the website is deleted.
- "The Weirdo": The square baby cries when Sussie terrifies him.
- "The Nuisance": Ed and the black pentagon are seen in the crowd.
- "The Line": Ed's group is in the line for Stellar Odyssey. Later, the black pentagon and black rectangle are in a crowd running to where they think there is a theatre on Elmore Street.
- "The List": The black rectangle and the black pentagon are seen in the audience watching the play.
- "The News": The yellow triangle, the pentagon guy, and the square kid watch the Wattersons' house burning. Later, the black pentagon walks on the sidewalk.
- "The One": The black pentagon is seen walking in the mall.
- "The Cage": The black rectangle and black pentagon are seen in the crowd cheering for Mr. Corneille.
- "The Factory": The purple pentagon works at the Rainbow Factory.
- "The Revolt": The black pentagon and black rectangle are in Darwin's imagination.
- The male blue triangle is named Ed, as revealed in "The Extras."
- They have similarities with the titular character of the arcade game, Q*bert.
- It is revealed in "The Misunderstandings" that showing one's thumbs to them is culturally insensitive to them.