Chungus Dimension

The Chungus Dimension is a hidden level found in the May 1995 build of Super Mario 64 as well as regular personalized copies of Super Mario 64, based around a large version of Bugs the Bunny from Looney Tunes known as Big Chungus, believed to have been incorporated as a joke by Shigeru Miyamoto himself. The Chungus Dimension is a clone of the entire game as seen in the May 1995 build, though every texture is made into Big Chungus as well as having the presence of several other anomalies. It is accessed by wanting to find Big Chungus in Super Mario 64. It is not understood how the Personalization AI recognizes this.

Description
The Chungus Dimension is made up of every level and area in the May 1995 Build of Super Mario 64 with all textures excluding text replaced with Big Chungus. Text is edited to talk about Big Chungus, such as saying "Big, big, chungus, big chungus, big chungus!" And music is changed to a song about Big Chungus. This song has currently not been identified.

Several objects are exclusive to the Chungus Dimension. These are mainly regular objects in the base game that are replaced with models of Big Chungus, and clones of MIPS the Rabbit known as MIPS Chungus that have been reported to twerk when not jumping. There has even been reports of a "Grand Chungus" as the final boss of the Chungus Dimension, though any who report it have never defeated it and disappear soon after.

Trivia

 * big big chungus big chungus big chungus
 * MIPS Chungus was later discovered outside of the Chungus Dimension, implying that the Chungus Dimension is leaking into the regular dimension.
 * The Chungus Dimension has been theorized to somehow be the aftermath of the Shadow Realm after the Disappearance event, as it was only reported after the Shadow Realm disappeared and is also considered it's own dimension similarly to the Shadow Realm.