Doomsday Book

The Doomsday Book was a numbered list of universes in the Multiverse, created and maintained by the Council of Frogs. According to Sylvester Shoebill, it was named in reference to a point of history concerning William the Conqueror. The creation of the Doomsday Book involved the opening of a “registration office” where representatives of each universe were invited. The first universe to have its representatives reach said office thus got the enviable name of Prime Universe, although it did not actually have any particular cosmic significance. (PROSE: The Grand Multiverse Hotel)

A Jenny Everywhere once spent a day in a universe known as the Third Universe under the Council of Frogs' "nomenclature", so she could lend a hand in the aftermath of the Unravel. (PROSE: A World of Pure Unimagination)

Behind the scenes

Below is a list of universes in works hitherto documented by the Wiki which appear to follow the Council of Frogs naming system.

No.	Primary name	Other names	First seen in	First named in	Debut date	Naming date
1	Prime Universe	N/A	PROSE: The Green Gorillas		March 22nd, 2019
3	Third Universe		COMIC: The Late Shift	PROSE: Resurrection of the Author	2004	January 1st, 2021
18	Reality 18		PROSE: The Apocryphal Journeys of Jenny Everywhere		May 11th, 2022 - October 17th, 2022
67	67th Universe		PROSE: The Grand Multiverse Hotel		November 9th, 2020
77	Dimension 77		PROSE: The Interlude of Jenny Everywhere		September 8th, 2022
97	97th Cosmos	Earth-HG66	VIDEO: The Wellsians	PROSE: The Resurrection of the Wellsians	July 25th, 2019	September 28th, 2019
172	Dimension 172	N/A	COMIC: The Legend of Jenny Everywhere		June 14th, 2009 - October 11th, 2009
331	Dimension 331
577	Dimension 577
672	Dimension 672
775	775th Universe	Dimension 775, Reality #775	COMIC: The Demon and the Butterfly		November 9th, 2020
819	819th Universe	819th Cosmos	PROSE: Century Smith and the Time Terror		March 16th, 2021
925	925th Universe	Nine-Two-Five Universe	PROSE: The Tribulations of Jenny Over-There	PROSE: Family Business	April 1st, 2022	August 13th, 2022
1579	Dimension 1579	1579th Dimension	PROSE: Of Romeos and Juliets		May 18th, 2019
38167	38167th Universe	N/A	COMIC: Jenny Everywhere and the Master of Monsters	PROSE: Family Business	August 13th, 2022
12682621	12682621st Universe		COMIC: Jenny Everywhere and the Master of Monsters
659433585786388480	659433585786388480th Universe		COMIC: A Match Made in the Heavens	PROSE: Family Business	August 13th, 2021	August 13th, 2022