Disco Janet is a scrapped version of Janet with only one been evident in the series. Her purpose as a Janet is also unclear; Good Janets, Bad Janets, and Neutral Janets are created to serve their respective locations, but Disco Janet has no apparent home.
Disco Janet: "What it is! What it is!"—Disco Janet upon arriving at the Judge's Chambers.
Disco Janet was manufactured in the Janet Warehouse. It is unclear what the intention of her creation was, though she was evidently seen in The Bad Place during her short time in existence as she has some history with Michael, who stated that she was "around for a while".
Her first appearance occurs in Chapter 47, when she roller-skates into Judge Gen's courtroom with the other Janets. In Chapter 49, she gave Chidi Anagonye a pair of roller skates and was seen skating through the Judge's chambers. She is marbleized by the Judge with the last words "Keep On Trucking". Disco Janet's void delayed the Judge in her effort to erase the earth via Disco.
Chidi: "Yes! I got them from Disco Janet. Thanks, Disco Janet!"
Disco Janet: "Solid!"—Disco Janet's "groovy" persona.
Michael describes Disco Janet as "fun, but a lot." She is peppy and energetic and outgoing.
Disco Janet wears a purple shirt underneath a silver shining vest with matching silver bell bottom pants, and roller skates. She also wears bright pink lipstick and has big, curly hair.
- Main page: The Void#Disco Janet
As a unique Janet, Disco Janet has a correspondingly unique Void. The entire space is a dance floor with music and a disco ball. Music plays on a loop in the background. Disco Janet's search bar is used by speaking into an 8-track receiver microphone.
- Michael Schur hinted at a new type of Janet before the release of Season 4, which Eric Goldman confirmed in July 2019.
- When a Disco Janet is marbleized, it turns into a marble sized disco ball. It's unknown if she remained marbleized.
- Unlike other Janet's void, Disco Janet's void has the song "Ring My Bell" playing on a loop, with a disco ball in the epicenter. Disco Janet's "search bar" is an 8-track radio with a microphone in which you say what you want. The track to put in to accomplish this act is entitled 'Whatcha Lookin' For, Baby?'.
- Goldman, Eric. “We Will Meet Another Version of Janet in Season 4.” Twitter, Twitter, 20 July 2019, twitter.com/TheEricGoldman/status/1152666449460076544.