List of Paper Mario: The Origami King pre-release and unused content

This is a list of pre-release and unused content for the game Paper Mario: The Origami King.

Early builds
Before entering Peach's Castle for the first time, the player was originally going to have a 360-degree view of the castle as well as some models of Princess Peach, which appear unused in the game's files with different hair and jewels on her crown. Some leftovers from Paper Mario: Color Splash in the game's code include Mario swinging his hammer, which is 2D, even though in the game it is 3D. The accessory-selling Monty Mole originally had walking animations. Additionally, there are unused sprites for Captain T. Ode, as well as Bowser and Bowser Jr. inside the Koopa Clown Car.

Musée Champignon
As with the art gallery at the Prisma Museum in Paper Mario: Color Splash, there is an art gallery in the Musée Champignon dedicated to concept art showing various original designs for characters and locations. The Red Streamer section shows early ideas such as:
 * An unused nighttime theme for what appears to be a section in Whispering Woods.
 * A variety of sketches for Magic Circles, including those for the 1,000-Fold Arms and Earth Vellumental.
 * The museum itself, with a Super Marino of a lighter yellow. The piece in the southeast corner appears to show a Porcupuffer rather than a Blooper.
 * A conception of the Battle Lab. The Bossotronic Fighter was red instead of blue, while the floor was a lighter shade of blue.
 * A very early idea for Picnic Road. Notably, it is inhabited by regular Paper Goombas rather than origami Goombas.
 * Different ideas for what Autumn Mountain would look like in the background of Overlook Mountain.

The Blue Streamer section shows early ideas such as: The Yellow Streamer section shows early ideas such as: The Purple Streamer section shows early ideas such as: The Green Streamer section shows early ideas such as: The origami character section shows a few unused enemies such as: There are also various designs for characters such as Mario and Olivia relating to Japanese culture.
 * Whirlpools for Eddy River. A certain, much larger whirlpool features a variety of vibrant colors.
 * Three different models of the Water Vellumental Shrine, each a different tone.
 * A model of the storage room in Shogun Studios, with the Goomba Mask away from the shelves.
 * Several models of a theoretical Ninja Attraction. Although most of the rooms are similar, the cutout ninjas had a way different design.
 * A different stand for the Toad's Automoboots mechanic, set up in Breezy Tunnel.
 * A completely unused area for what appears to be a training facility occupied by Paper Macho Soldiers.
 * The sarcophagus room in the Temple of Shrooms, showing the faceless Toads were red rather than yellow.
 * Early photos of Scorching Sandpaper Desert show the desert tower was much closer to the Fire Vellumental Cave.
 * An early image of ? Island shows a missing Sensor Lab door.
 * One of the areas in Ice Vellumental Mountain had a regular Sledge Bro rather than an origami one. The chest off to the side containing a MAX UP Heart appears to be missing.
 * A completely different setup for one of the springs, as well as Mario in a Frog Suit, which does not even appear in-game,
 * Shy Guys Finish Last actually appears to have been hosted by a Snifit at first.
 * The shortcut pipe in the Spring of Rainbows is orange rather than green.
 * Parabones
 * Dino Rhinos
 * Sombrero Guys
 * Amazing Flyin' Hammer Brothers