The first person to conceive the idea of a Pokémon wiki was Meowth346 of Pokémon Forever. Eventually, Bulbapedia itself was created in December 2004, and opened to the public the following February. In April 2005, nYoo suggested a German-language version, however, nothing came of this. Later in the year, in August, the idea that would eventually spawn PokéWiki came to be.
Due to their both being open-content wiki Pokémon encyclopedias, PokéWiki and Bulbapedia soon allied to form Encyclopædiæ Pokémonis, hoping that soon more would join the group. Eventually, the Japanese Pokémon Wiki answered the call in June 2006, having been created in April of that year.
Currently, the six wikis interlink to each other, and navigation between articles on the same subject is made possible by links in the sidebar.
Encyclopædiæ Pokémonis is Latin for Encyclopedias of Pokémon. This translation takes the idea that "Pokémon" is both the singular and plural one step further, by using the singular "Pokémonis" rather than the plural "Pokémonum".
The logo of Encyclopædiæ Pokémonis is a Poké Ball image superimposed over a polar azimuthal equidistant projection of the planet Earth, reminiscent of the Flag of the United Nations. The color of the Poké Ball, as well as the color of the underlying Earth, differs among the members of Encyclopaediae Pokémonis: Bulbapedia's is green, PokéWiki's is teal, Pokémon Wiki's is blue, Wikinezka's is red, Poképédia's is yellow, and LANDpedia's is orange.